3 years ago

Solve x2 + 6x + 7 = 0.

Mathematics

1 answer:

Mrrafil [7]3 years ago

7 0

Answer:

x = -6 and -1

Step-by-step explanation:

x^2 + 6x + 7

Factorise- find two numbers that multiply to be 6 and add to be 7: 6 and 1

(x+6)(x+1)

Set each expression equal to 0 and solve

x + 6 = 0 -> x = -6

x + 1 = 0 -> x = -1

You might be interested in

Please Help <br> Which fuction is the inverse of f(x)=50,000(0.8)^x

RUDIKE [14]

D is the correct answer to your question

3 0

3 years ago

2y + x + 7 = 0<br> how do i solve with substitution?

Jlenok [28]

Answer:

x+2y=-7

Step-by-step explanation:

2y + x =-7

x+2y=-7

6 0

3 years ago

Read 2 more answers

Pint 16oz $3.98

LiRa [457]

Okay, so when dealing with unit rates you want to see how much you have of your main measurement. In this case your main measurement is ounces. Since you have 16 and 32 you are going to divide your dollar amount by those and round to the nearest tenth.
Here are the equations that need to be used. Figure out the answers to them and round. This will give you your answer
3.98/16=
5.98/32=

4 0

3 years ago

What is the slope of the line that passes through the points (5, -11)and (-9, 17)

dalvyx [7]

Answer:

Step-by-step explanation:

-2 is the slope for the points listed above.

3 0

3 years ago

Read 2 more answers

0.6x = 5.4 what is x

zysi [14]