Question

(x+2)²-x²=260 please find the x

Answer 1

Answer:

(x+2)² - x² = 260

as we know, [(a+b)² = a² + b² + 2ab]

[x² +2² + 2*x*2] - x² = 260

x² + 4 + 4x - x² =260

4 + 4x =260

4x =260-4

4x = 256

x = 256/4

x = 64 (ANS)

Answer 2

Answer:

Answer is 64

Step-by-step explanation:

${(x + 2)}^{2} - {x}^{2} = 260 \\ {x}^{2} + 4x + 4 - {x}^{2} = 260 \\ 4x + 4 = 260 \\ 4x = 260 - 4 = 256 \\ x = \frac{256}{4} = 64$

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