Question

3.
x² - (x - 2)² = 32​

Answer 1

Answer:

x2-(x-2)2=32

x2-(x2+4-4x)= 32

x2-x2-4+4x = 32

4x = 36

x = 9

Answer 2

Step-by-step explanation:

${x}^{2} - (x - 2) ^{2} = 32 \\ {x}^{2} - ( {x}^{2} - 4x + 4) = 32 \\ {x}^{2} - {x}^{2} + 4x - 4 = 32 \\ 4x = 32 + 4 \\ 4x = 36 \\ x = \frac{36}{4} \\ x = 9$