Multiplication is a way of adding the same number multiple times. When you multiply 3×3, you're adding the number 3 three times:
3×3=3+3+3=9
So, 3×3=9 means that you're taking three groups of three, which equals 9 in total.
Frequently asked questions (FAQs)
Find the basis of vectors in ℝ³ for the subspace defined by the equation 2x - y + 3z = 0.
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Find the missing angle measure: ∠A = 58°, ∠C = 72°. What is the value of ∠B?