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xenn [34]
3 years ago
8

Simplify 8y(y - 4) + 3y(y + 2).

Mathematics
2 answers:
Ronch [10]3 years ago
8 0
= 8y^2 - 32y + 3y^2 + 6y

= 11y^2  - 26y
Klio2033 [76]3 years ago
4 0
Hey!

Let's write the problem, 
8y\left(y-4\right)+3y\left(y+2\right)
Apply the distributive property on the left side.
=8y^2-32y+3y\left(y+2\right)
Apply the distributive property on the right side.
=8y^2-32y+3y^2+6y
Add like terms.
=11y^2-26y
We have successfully finished simplifying the expression. 

Thanks!
-TetraFish
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When we have two equations in terms of two different variables; b and c, that we need to solve, then this becomes a simultaneous equation problem. 

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Then we substitute b=20-c into Equation [2]
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Now we know the value of c which is c=7, substitute this value into b=20-c we have b=20-7=13

Answer:
Numbers of books = 13
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