Question

22.Using suitable identity solve (x + 3)2

Answer 1

Answer:

2x + 6

Step-by-step explanation:

If 2 shows square sign,then

(x+3)²=x²+ 3x + 3²

= x²+3x+9

Answer 2

Answer:

x² + 6x + 9

Step-by-step explanation:

We know the identity- (x + y)² = x² + 2xy + y²

Here x = x, y = 3

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⇒ (x + 3)²

⇒ (x)² + 2(x)(3) + (3)²

⇒ x² + 6x + 9

Therefore, (x + 3)² = x² + 6x + 9