Question
Evaluate -4x^2+ 4x - 5 at the point x = 4
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Answer to a math question Evaluate -4x^2+ 4x - 5 at the point x = 4
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1. Substitute \( x = 4 \) in the expression \(-4x^2 + 4x - 5\).
2. Calculate \((-4)(4)^2\):
-4 \cdot 16 = -64
3. Calculate \(4 \cdot 4\):
4 \cdot 4 = 16
4. Subtract 5:
-64 + 16 - 5
5. Simplify:
-64 + 16 = -48
-48 - 5 = -53
6. Final answer:
-61
2. Calculate \((-4)(4)^2\):
3. Calculate \(4 \cdot 4\):
4. Subtract 5:
5. Simplify:
6. Final answer:
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