Question

05. Simplify (1) (2x - 4x + 1) (2x - 4x² - 1) (ii) (a + b + c)2 + (a - b + c)?​

Answer 1

Answer:

8x³−8x²+4x−1

Step-by-step explanation:

(2x−4x+1)(2x−4x²−1)

=(2x+−4x+1)(2x+−4x²+−1)

=(2x)(2x)+(2x)(−4x²)+(2x)(−1)+(−4x)(2x)+(−4x)(−4x²)+(−4x)(−1)+(1)(2x)+(1)(−4x²)+(1)(−1)

=4x²−8x³−2x−8x²+16x³+4x+2x−4x²−1

=8x³−8x²+4x−1

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