Asked by KAT

hi I really need help with this
Q1 (2x)(20x)
a=20x
b=12x
c=20x^2
d=5x
Q2 -3m(m+8)
a=-3m^2+24
b=-3m^2-24m
c= -24m^2
d= -4m+5
Q3 4d(2d-9)
a= 8d-36d
b=-3
c=-28d^2
d=8d^2-36d
Q4 (3x+4)(x-2)
a=3x^2-2x-8
b=x-8
c= 3x-2x-8
d=3x^2+2x+8
Q5 (2y-1)(4y-3)
a= -2y+3
b=8y^2-10y-3
c=8y^2-10y+3
d=8y^2-2y+3
Answered by mathhelper
Q1 (2x)(20x)
= 40x^2 , not one of the choices

Q2 -3m(m+8)
= -3m^2 - 24m , looks like b

Q3 4d(2d-9)
= 8d^2 - 36d , looks like d

you do the rest, they are all the same type
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