Question

a) 4y² × (-34)
b) -2xy(5x - 3)
c) 5x(x² - y2 + xy)
d) (2x + 3)(2x - 3)
e) 5x(4xy - 4)
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Answer 1

Answer:

a.-136y^2

b.-10x^2y+6xy

c.5x^3-10xy+5x^2y

d.2x^2-9

e.20x^2y-20x

Answer 2

Answer:

a) 4y² × (-34) = - 136y^2

b)-2xy(5x - 3) = - 10xy +6xy

c) 5x(x² - y2 + xy) = 5x^3 - 5xy^2 + 5x^2y

d) (2x + 3)(2x - 3) = 4x^2 - 6x + 6x - 9

= 4x^2 - 9

e) 5x(4xy - 4) = 20x^2y - 20x