Question

What is the value of the expression below when: a = -2; b = 3; and c = -5? (a.a) - 2ac +5b

Answer 1

To find the value of an expression we plug the given number in their corresponding places and do the operations:

$(a\cdot a)-2ac+5b$

plugging the values we have:

$((-2)(-2))-2(-2)(-5)+5(3)=4-20+15=-1$

Therefore the value of the expression is -1.