Question

Answer 1

a) \(=10x^3+50x^2\)

b) \(=2x^2-5x+8x-20=2x^2+3x-20\)

c) \(=16x^2-24x+9-16x^2=9-24x\)

 

Answer 2

\(a,=10x^3+50x^2\\ b,=2x^2+8x-5x-20=2x^2+3x-20\\ c,=16x^2-24x+9-16x^2=9-24x\)

Answer 3

a) \(10x^2\left(x+5\right)\)

= \(10x^3=50x^2\)

b) \(\left(2x-5\right)\left(x+4\right)\)

= \(2x^2-5x+8x-20\)

=\(2x^2+3x-20\)

c) \(\left(4x-3\right)^2-16x^2\)

=\(16x^2-24x+9-16x^2\)

=\(9-24x\)

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