Question

1 + x in brackets into 1 + x square in bracket into 1 minus x in brackets​

Answer 1

Solution 1:

(1+x)(1+x)(1-x)

=(1+x)²(1-x)

=(1+2x+x²)(1-x)

=1+2x+x²-x-2x²-x³

=-x³-x²+x+1

Solution 2:

(1+x)(1+x)(1-x)

=(1+x)(1²-x²)

=(1+x)(1-x²)

=1+x-x²-x³

=-x³-x²+x+1

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