Question

Evaluate the expression for x =5 and y= 1 (x-7y)²

pretty confused

Answer 1

49y^2+y-25=0

Explanation:

(5_7y)^2=25-49y^2

y=25-49y^2=49y^2+y-25=0

Answer 2

-4

Explanation:

So since x=5 and y= 1 the new expression would be 1(5-7) to the second power. Using pemdas, 5-7 is -2. -2 to the second power is -4. negative 4 times 1 is negative 4.