Help plz: 4. Multiply the following signed numbers:

a. (-42x)(+2x) =

b. (+7x)(-4x)(-3x) =

c. (+7)(-4)(-4) =

d. (+10)(-2)(-2)(+4) =

a. (-42x)(+2x) = -84x^2

b. (+7x)(-4x)(-3x) = 84x^3

c. (+7)(-4)(-4) = 112

d. (+10)(-2)(-2)(+4) = 160

a. (-42x)(+2x) = -84x

b. (+7x)(-4x)(-3x) = -84x

c. (+7)(-4)(-4) = -112

d. (+10)(-2)(-2)(+4) = -160

Step-by-step explanation:

This is like multiplication.

Please let me know if I got something wrong.

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation

step-by-step explanation:

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