Hey, I need some help... What is 9-3(45x + 47x) - 2 + 66
Whoever helps me will get brainliest!!! I rly need help. Thanks

55-276x

Step-by-step explanation:

To solve this question, you will have to follow some specific principles to prevent error

So to solve this we will have to follow the BODMAS rule

9-3(45x+47x)-2+66

Deal with the bracket first

3(45x+47x)

3(92x)

276x

Then back to the question

9-276x-2+66

Collect like terms

9-2+66-276x

Add comes before substration according to bodmas

9+64-276x

55-276x

This cannot be solved further because they are different from each other

Therefore the final answer is 55-276x

20

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15