$MathMaster logo$

MathMaster

Home
general
5a 7b a 3b

Question

(5a-7b)*(a+3b)

246

likes

1228 views

Answer to a math question (5a-7b)*(a+3b)

$Expert avatar$

4.8

106 Answers

(5a-7b)(a+3b) = 5a^2-7ab+15ab-21b^2 = 5a^2+8ab-21b^2

Frequently asked questions (FAQs)

Math Question: Find the limit as x approaches 0 of (3x^2 - sin(2x))/(4x - ln(1+x)).

+

Find the value of f(3) if f(x) is a linear function such that f(x) = x. (

+

What is the derivative of f(x) = 3x^2 - 6x + 1?

+

New questions in Mathematics

Let f(x)=||x|−6|+|15−|x|| . Then f(6)+f(15) is equal to:

5) A family with a father, mother and 3 children must sit on five chairs in a row and the only restriction is that the mother must be at one end. In how many different ways can they be seated?

I) Find the directional derivative of 𝑓(𝑥, 𝑦) = 𝑥 sin 𝑦 at (1,0) in the direction of the unit vector that make an angle of 𝜋/4 with positive 𝑥-axis.

If f(x) = 3x 2, what is the value of x so that f(x) = 11?

Serum cholesterol levels in men aged 18 to 24 years have a normal distribution with a mean 178.1mg/100 ml and standard deviation 40.7 mg/100 ml. The. Randomly choosing a man between 18 and 24 years old, determine the probability of your serum cholesterol level is less than 200. B. Whether a serum cholesterol level should be judged too high if it is above 7% higher, determine the value of the separation level of levels that are too high. w. Determine a 90% reference range for serum cholesterol level among men from 18 to 24 years old.

-3x 2y = -6; -5x 10y = 30

is the x element (180,270), if tanx-3cotx=2, sinx ?

Convert 78 percent to a decimal

(24, -7) is on the terminal arm of an angle in standard position. Determine the exact values of the primary trigonometric functions.

Find 2 numbers whose sum is 47 and whose subtraction is 13

The sum of two numbers is 144. Double the first number minus thrice the second number is equal to 63. Determine the first two numbers.

If a two-branch parallel current divider network, if the resistance of one branch is doubled while keeping all other factors constant, what happens to the current flow through that branch and the other branch? Select one: a. The current through the doubled resistance branch remains unchanged, and the current through the other branch decreases. b. The current through the doubled resistance branch decreases, and the current through the other branch remains unchanged. c. The current through the doubled resistance branch increases, and the current through the other branch remains unchanged. d. The current through both branches remain unchanged.

In an audience of 4000 people, 2 people are chosen, at random, to appear on stage. How many ways can the people be chosen?

Show work on 4108 divided by 4

Sections of steel tube having an inside diameter of 9 inches, are filled with concrete to support the main floor girder in a building. If these posts are 12 feet long and there are 18 of them, how many cubic yards of concrete are required for the job?

A person runs 175 yards per minute write a variable that represents the relationship between time and distance

Find the equation of a straight line that has slope 3 and passes through the point of (1, 7) . Write the equation of the line in general forms

Solve for z: 2z-6=10z+2

How many moles are there in 235 grams of potassium thiosulfate pentahydrate? K2S2O3*5(H2O)

Slope (7,3) and (9,5)