10ax - 5ay + 2bx - by
=10ax + 2bx - 5ay - by
=2x(5a + b ) - y(5a + b )
=(2x - y )(5a +b)
The correct answer would be D !m
Answer:
Sorry the picture is blocked on my chromebook but i hope this helps
Step-by-step explanation:
A positive discriminant indicates that the quadratic has two distinct real number solutions. A discriminant of zero indicates that the quadratic has a repeated real number solution. A negative discriminant indicates that neither of the solutions are real numbers.
Answer:
Step-by-step explanation:
Equation of circle: (x - h)² + (y - k)² = r² where (h,k) is the center.
Center( -4 , 4) and r = 5
(x -[-4])² + (y - 4)²= 5²
(x + 4)² + (y-4)² = 25
x² + 2*4*x +4² + y² - 2*y*4 + 4² = 25
x² +8x + 16 + y² - 8y + 16 = 25
x² + 8x + y² - 8y + 16 + 16 -25 = 0
x² + 8x + y² - 8y +7 = 0
9^2 - 4^2 = (9 + 4)(9 - 4)
So the polynomial identity used here is
