formula to expand (x+3)^2
Answers
Answered by
37
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.....
Answered by
19
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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