Answer:
(x + 5)² + 10
Explanation:
Given
x² + 10x + 35
To complete the square
add/ subtract ( half the coefficient of the x- term)² to x² + 10x
x² + 2(5)x + 25 - 25 + 35
= (x + 5)² + 10
sry i thought i knew how to do it but I can't remember
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