Question

What is the value of the expression 5y2 + 10y-2when y=4

Answer 1

To find the value of the expression 5y^2 + 10y - 2 when y = 4, we can substitute y = 4 in the expression and simplify as follows:

5y^2 + 10y - 2, when y = 4

= 5(4)^2 + 10(4) - 2 [Substituting y = 4]

= 5(16) + 40 - 2

= 80 + 38

= 118

Therefore, the value of the expression 5y^2 + 10y - 2 when y = 4 is 118.

Answer 2

118

Explanation:

5y² + 10y - 2 y = 4

5(4)² + 10(4) - 2

= 5(16) + 40 - 2

= 80 + 40 - 2

= 120 - 2

= 118