3 years ago

What are the solutions to x2 + 8x + 7 = 0?

Mathematics

1 answer:

Virty [35]3 years ago

7 0

Answer:

x = - 1 and x = - 7

Step-by-step explanation:

Given

x² + 8x + 7 = 0 ← in standard form

(x + 1)(x + 7) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x + 7 = 0 ⇒ x = - 7

You might be interested in

Hello I’m in algebra and I need help on questions I’ll give brainlist ASAP!

dmitriy555 [2]

Answer:

Step-by-step explanation:

if x is 20

6x would be 120

3x would be 60

120 + 60 = 180 which checks out

180 is the degree amount of a straight line

4 0

3 years ago

Ok, I just have two questions:

Sati [7]

Answer:

bsta 2 ...ksi tama ako jan

6 0

3 years ago

Read 2 more answers

Select all equations that have x = 3 as a solution.

Solnce55 [7]

Answer:

Plug in a 3 every time you see an "x" and the left side should equal the right side

Step-by-step explanation:

5 0

3 years ago

The length of a rectangle is 5cm. greater than its width. The perimeter is 58 cm. Find the dimensions of the rectangle.

lidiya [134]

$w-the\ width\\l=w+5-the\ length\\\\\\The\ perimeter\ of\ rectangle:P=58cm\\\\P=2w+2l\\\\2w+2(w+5)=58\\2w+2w+10=58\\4w+10=58\ \ \ \ |subtract\ 10\ from\ both\ sides\\4w=48\ \ \ \ \ |divide\ both\ sides\ by\ 4\\w=12\ (cm)\\\\l=12+5=17\ (cm)\\\\Answer:The\ dimensions\ of\ the\ rectangle:17cm\times12cm$

8 0

3 years ago

Read 2 more answers

Is it easier to graph an equation in y-intercept form or standard form? Explain.

Dafna1 [17]

Y-intercept form because it is more commonly used and easier to remember. The foundation of the y-intercept is easier to put in a graphing calculator also as it is already set to y=

3 0

3 years ago