Solve for c.

solve for x.

solve for c.

solve for x.

solve for x.

1) The option is correct.

2) The option x=-2 or x=-3 is correct.

3)  The option is correct.

4) The option is correct.

5)  The option x=-2 or x=-3 is correct.

Step-by-step explanation:

1) Given equation is

Now to solve the equation for c:

Squaring on both sides we get

Therefore the option is correct.

2) Given equation is

Now to solve the equation for x:

Squaring on both sides we get

which is a quadratic equation in x.

We can solve it by finding factors

x+2=0 or x+3=0

Therefore  x=-2 or x=-3

Therefore the option x=-2 or x=-3 is correct.

3)  Given equation is

Now to solve the equation for c:

Squaring on both sides we get

Therefore the option is correct.

4) Given equation is

Now to solve the equation for x:

Squaring on both sides we get

Therefore the option is correct.

5) Given equation is

Now to solve the equation for x:

Squaring on both sides we get

which is a quadratic equation in x.

We can solve it by finding factors

x+2=0 or x+3=0

Therefore  x=-2 or x=-3

Therefore the option x=-2 or x=-3 is correct.

d

step-by-step explanation:

given

y + 3 = - 4(x - 2) ← distribute the parenthesis

y + 3 = - 4x + 8 ( subtract 3 from both sides )

y = - 4x + 5 → d

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.