Question

Find the Value of this??? it's algebra for class 8 ​

Answer 1

Step-by-step explanation:

4x² + 20x + 25 = 0

4x² + 10x + 10x + 25 = 0

2x(2x + 5) + 5(2x + 5) = 0

(2x + 5)(2x + 5) = 0

2x + 5 = 0 , 2x + 5 = 0

2x = -5 , 2x = -5

x = -5/2 , x = -5/2

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Answer 2

4x² + 20x + 25

= 4x² + 25 + 20x

= (2x)² + 5² + 2(5 × 2)

= (2x + 5)²

Since, a² + b² + 2ab = (a + b)²