Question

$100 - (x- 5)^2$
​

Answer 1

Step-by-step explanation:

$100 - {(x - 5)}^{2} \\ 100 - ( {x}^{2} - 2x \times 5 + {5}^{2}) \\ 100 - ( {x}^{2} - 10x + 25)$

$100 - {x}^{2} + 10x - 25 \\ 75 - {x}^{2} + 10x \\ - {x}^{2} + 10x + 75$