D would be the answer.Since you are adding the sum first hence the parentheses.
The answer is -225.
9 times -25 is -225.
9*-25=-225
The area of a circle is pi times the radius squared (A = π r²).
Answer:
Yes
Step-by-step explanation:
Use the completing the square method:
16(x^2-x)+4
=16((x-1/2)^2 - (1/2)^2)+4
=16((x-1/2)^2 - 1/4)+4
=16((x-1/2)^2) - 16/4 + 4
=16(x-1/2)^2
=4^2(x-1/2)^2
The product of two square is itself a square.
