Question

Combine like terms.

7y2 +7(4y2 - 5) =

Does anyone understand this ? I will try my best to give points !! Please I really don’t understand

Answer 1

To solve the question the answer is 35y2 - 5 (i think)

Explanation:

Yes and it's actually very simple.

To start off:

Simplify the equation: multiply 7 by the numbers in the parentheses getting: 28y2 - 35 .......full equation: 7y2 + (28y2 - 35)

New equation: 7y2 + (28y2 - 35) now combine like terms this means adding each common variable together. in this case, 7y2 and 28y2 would be added together to simplify the equation. Add them together, the new equation is: 35y2 - 5

Lmk if you have any questions i hope this helps

Answer 2

`7y^2+7\left(4y^2-5\right)=35y^2-35`

Explanation:

Given the expression

`7y^2+7\left(4y^2-5\right)`

First Apply distributive law to expand 7(4y² - 5) :
`a\left(b-c\right)=ab-ac`

`7y^2\:+7\left(4y^2\:-\:5\right)\:=7y^2+7\cdot \:\:\:4y^2-7\cdot \:\:\:5`

simplify

`=7y^2+28y^2-35`

Add like terms: 7y²+ 28y²=35y²

`=35y^2-35`

Therefore,

`7y^2+7\left(4y^2-5\right)=35y^2-35`