Can you please help me and I will give you Brainliest.

Mathematics

2 answers:

wel3 years ago

7 0

Answer:

b and e

Step-by-step explanation:

these are the only expressions that if you simplify all the way out you get 12y+24.

Oksanka [162]3 years ago

4 0

The answer is b and e

B. 4(3y+6)
If you distribute 4 to 3y and 6 you will get 12y+24
However before doing the following solution solve the given expression first which is 12(y+2)
You need to distribute 12 so the answer will be 12y+24, therefore 4(3y+6)=12(y+2)

E. 12(y)+12(2)
In the expression stated you should multiply twelve to both y and 2 which is the same as 12(y+2) because you both distribute the 12 to both variable(y) and coefficient(2) which is the same as the given expression. Both answers are the same and is equal to 12y+24

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X^2 + 32x + 256 = 1<br>please show steps

Elena L [17]

$\boxed{x_{1}=-15} \\ \\ \boxed{x_{2}=-17}$

<h2>Explanation:</h2>

In this case, we have the following equation:

$x^2+32x+256=1$

But we can write this equation as:

$x^2+32x+256=1 \\ \\ Subtract \ -1 \ from\ both \ sides: \\ \\ x^2+32x+256-1=1-1 \\ \\ x^2+32x+255=0$

So this final result is a quadratic equation written in Standard Form ( $ax^2+bx+c=0$ ). We need to find the solutions to this equations, so let's use quadratic formula:

$x=\frac{-b \pm \sqrt{b^2-4ac}}{2a} \\ \\ a=1 \\ b=32 \\ c=255 \\ \\ \\ x=\frac{-32 \pm \sqrt{(32)^2-4(1)(255)}}{2(1)} \\ \\ x=\frac{-32 \pm \sqrt{1024-1020}}{2} \\ \\ x=\frac{-32 \pm \sqrt{4}}{2} \\ \\ x=\frac{-32 \pm 2}{2} \\ \\ Finally, \ two \ solutions: \\ \\ \boxed{x_{1}=-15} \\ \\ \boxed{x_{2}=-17}$