Question

18. (X - 5)2 -- (x + 2)2 = -2
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Answer 1

Answer:

x= 1

Step-by-step explanation:

(x-5)2 - -2(x+2)= -2

2x-10-(-2x-4)= -2

2x-10+2x+4= -2

4x-6= -2

4x= -2+6

4x= 4

x= 4/4

x= 1

correct explanation

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Answer 2

Answer:

Question :-

➠ (x - 5)² - (x + 2)² = - 2

Answer :-

➠ (x - 5)² - (x + 2)² = - 2

➻ {(x)² - 2 × x × 5 + (5)²} - {(x)² + 2 × x × 2 + (2)²} = - 2

➻ (x² - 10x + 25) - (x² + 4x + 4) = - 2

➻ x² - 10x + 25 - x² - 4x - 4 = - 2

➻ x² - x² - 10x - 4x + 25 - 4 = - 2

➻ - 10x - 4x + 25 - 4 = - 2

➻ - 14x + 21 = - 2

➻ - 14x = - 2 - 21

➻ - 14x = - 23

➻ x = $\dfrac{ - 23}{- 14}$

∴ x = $\dfrac{23}{14}$