Question

formula to expand (x+3)^2​

Answer 1

Question-

Formula to expand (x+3)^2

here,

We use the formula of (a+b)²

and we know that,

(a+b)² = a²+b²+2ab

so,

(x+3)²

==>

x² + 9 + 2×3× X

x²+6x+9

after factorise we get -

x²+6x+9

x²+3x+3x+9

x(x+3)+3(x+3)

(x+3) (x+3)

so,

zeroes are-

x+3 = 0

X = -3

here the zeroes are -3 In both case.

here is your answer.....

Answer 2

Answer:(a+b)²=a²+2ab+b²

Step-by-step explanation:

To solve (x+3)²

Using the identity (a+b)²=a²+2ab+b²

(x+3)²

=> x²+2×x×3+(3)²

=> x²+6x+9 = answer

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