2 years ago

12) Solve for x using the quadratic formula. Express your answer in simplest form.

Mathematics

1 answer:

lidiya [134]2 years ago

4 0

Answer:

Step-by-step explanation:

You might be interested in

What is the measure of the length of AB

Gnom [1K]

Answer:

Step-by-step explanation:

AC = AB + BC

16 = x+1 + x+7

Combine like terms

16 =2x+8

Subtract 8 from each side

16-8 = 2x+8-8

8 = 2x

Divide by 2

8/2 = 2x/2

4 =x

We want to find AB

AB = x+1 = 4+1 = 5

5 0

3 years ago

Read 2 more answers

How do you expand (5x+ 1)(5x-1)

AnnyKZ [126]

Step-by-step explanation:

Multiply both numbers so

25x2 - 6x + 6x - 1

25x2 - 1

3 0

3 years ago

Read 2 more answers

Question 1(Multiple Choice Worth 1 points)

REY [17]

The correct answer is d15

3 0

3 years ago

Answer number 20. Please answer all parts to the question.

emmasim [6.3K]

1: 7
2: Yes, 20 because it’s isolated from the rest of the points
(I don’t know the other ones, sorryyyyy)

5 0

1 year ago

How to factor 2n^2+3n-9 without splitting the middle term

kozerog [31]

$2n^2+3n-9= \\\\ a=2 \\ b=3 \\ c=-9 \\\\ \Delta= 3^2-4*2*(-9)=9+72\to\boxed{81} \\\\ x_1;x_2=\frac{-3 +\-\sqrt{81}}{2*2}= \frac{-3+/- 9}{4} \\\\ x_1=\frac{-3+9}{4}=\frac{6}{4}\to\boxed{\frac{3}{2}} \\\\ x_2=\frac{-3-9}{4}=\frac{-12}{4}\to\boxed{-4} \\\\ 2n^2+3n-9=(x-\frac{3}{2})(\x+4)$

7 0

2 years ago