Solve using elimination and show your work:
-4x-2y=-12
4x+8y=-24

Let's solve your system by elimination.

−4x−2y=−12;4x+8y=−24

−4x−2y=−12

4x+8y=−24

Add these equations to eliminate x:

6y=−36

Then solve6y=−36for y:

6y=−36

6y

6

=

−36

6

(Divide both sides by 6)

y=−6

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

−4x−2y=−12

Substitute−6foryin−4x−2y=−12:

−4x−(2)(−6)=−12

−4x+12=−12(Simplify both sides of the equation)

−4x+12+−12=−12+−12(Add -12 to both sides)

−4x=−24

−4x

−4

=

−24

−4

(Divide both sides by -4)

x=6

x=6 and y=−6

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!