Answer:
-21x+233y/42
Step-by-step explanation:
To simplify this, we need to do PEMDAS (parenthesis then exponents, then multiplication and division, then addition and subtraction). Here, we can't combine any like terms in the parenthesis. Since there's no exponents, that means that the next step is to do multiplication. This gives us:
3 - 15y - 21 + 2y - 6
Now we can combine like terms.
(-15y + 2y) + (3 - 21 - 6)
-13y - 24
Answer:
Completing the square.
Step-by-step explanation:
ax2 + bx + c has "x" in it twice, which is hard to solve.
But there is a way to rearrange it so that "x" only appears once. It is called Completing the Square
Answer:
I don't know if I'm right
Step-by-step explanation:
40 x 7 =280 + 180 = 460
Perimeter is:
(Length x 2) + (width x 2)
So basically:
(115 mm x 2) + (61 x 2)
<span>Hope that helps and correct me if I'm wrong!</span>
