Expand (x + 1) using an identity
Answers
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7
Correct question - ( x + 1 ) ²
Using the identity
❥ ( a + b ) ² = a² + 2ab + b²
x² + 2 x x x 1 + 1²
x² + 2x + 1 ➡ Answer
Answered by
0
Answer:
(x+1)
3
We know that (x+y)
3
=x
3
+y
3
+3xy(x+y)
Here x=x and y=1 we get
(x+1)
3
=x
3
+(1)
3
+3(x)(1)(x+1)
=x
3
+1+3x(x+1)
=x
3
+1+3x
2
+3x
=x
3
+3x
2
+3x+1
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