What is the value of a a2 + 3b + c - 2d, when a = 3, b = 8, c = 2, and d = 5?

The answer is 22

Step-by-step explanation:

2(3)+3(8)=30 +2= 32 -5(2) =22

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!