Question

Find the product of the following. i) –5a² bc, 6ab, 8abc² ii) –3x²y and (5y – xy) iii) x²y²z² and (xy – yz + zx) iv) (p + 6) and (q – 7) v) (2x + 7) and (x² – 5x + 6) vii) (x + y + 5) and (2x – 2y – 3)

Answer 1

i)-240*a^4*b^3*c^2

ii)-15*x^2*y^2+3*x^3*y^2

iii)x^4*y^3*z^2-x^2*y^3*z^3+x^3*y^2*z^3

iv)p*q+6*q-7*p-42

v)2*x^3-3*x^2-23*x+42

vii)2*x^2-2*y^2+7*x-12*y-15

Explanation: