Question

Simplify the expression 2 ( a² + ab) + 3 -ab, and find its value, when a=5 and b= -3.
Please answer by 5:05 today

Answer 1

Answer:

38

Step-by-step explanation:

Pull out like factors :

   a2 + ab  =   a • (a + b) 

Equation at the end of step 1:

(2a • (a + b) + 3) - ab

Final result :

2a2 + ab + 3

Now, we can substitute a=5 and b=-3 in the equation.

Thus,

2a²+ ab + 3

= 2(5)²+(5)(-3)+3

= 2×25+(-15)+3

= 50-15+3

= 38.