Question

If x= -2 and y =5 find the value of the expression 5y-3x2

Answer 1

37

Explanation:

5y-3x2

(5*5)-(3*-2)*2 Plug in the numbers for the variables

25-(3*-2)*2 5 times 5 equals 25

25- (-6)*2 3 times -2 equals -6

25 - (-12) -6 times 2 equals -12

37 25 minus -12 equals 37

Answer 2

13

Explanation:

Substitute the given values (x=-2 and y=5) to get the answer.

Given expression

5y-3x^2

Expression with the values plugged in

5*(5)-3(-2)^2

Solve using the order of operation (PEMDAS; parenthesis, exponent, multiply/divide, add/subtract).

5*5-3*4

25-12=13