Answer:
-4
Step-by-step 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.
Answer:
49y^2+y-25=0
Step-by-step explanation:
(5_7y)^2=25-49y^2
y=25-49y^2=49y^2+y-25=0
