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mote1985 [20]
3 years ago
5

Find the value of this expression if x = -7. x2 - 1

Mathematics
2 answers:
Reika [66]3 years ago
7 0

Answer:

x² - 1

-7² - 1

49 - 1

48

Free_Kalibri [48]3 years ago
3 0
The answer is: -14 -1 equals -15
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Evaluate the expression 8 -3 x 2 + 5.
lesya692 [45]

Answer:

7

Step-by-step explanation:

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3 years ago
Solve the equation: (5y + 2)(y - 3) = -13(2 + y)
storchak [24]

Answer:

2i

Step-by-step explanation:

Distribute:

(5y + 2)(y - 3)

5y^2-15y+2y-6

Which can be simplified into 5y^2-13y-6

Now the equation now looks like this: 5y^2-13y-6=-13(2+y)

For -13(2+y) multiply -13 with 2+y

Which is -26-13y

5y^2-13y-6=-26-13y

Simplify:

5y^2+20

Which can be simplified into 5(y^2+4)

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Hope this helps!

7 0
3 years ago
Is x ^ 2 + y ^ 2 = 6 a function?
oee [108]

Answer:

not a function

Step-by-step explanation:

for example

In order for an equation to represent a function any single value of x must have at most one corresponding value of y which satisfies the equation.

For x2+y2=9

XXXXif (for example) x=0

XXXXthere are two values for y (namely +3 and −3) which satisfy the equation

and therefore the equation is not a function.

3 0
3 years ago
I need the answer asap .! help please !
shtirl [24]

Answer:

i tried the math and if im correct it should be 0.52N

Step-by-step explanation:

im sorry if its not correct bro

8 0
3 years ago
I need the answer ASAP
iVinArrow [24]

Answer:

5

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
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