Solve the equation using the zero-product property.

Question

-9n(5n-5)
a. -1/9, 1
b. 0,1*****
c. -1/9,-1
d. 0,-1

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth.
x^2-6=x
a. x=2,3
b. x=-2,3 *****
c. x=2,-3
d. x=-2,-3

How many real number solutions does the equation have?
y=-5x^2+8x-7

a. one
b. two
c. none*****
d. infinitely many

Answer 1

1. your answer is correct if you actually had an equation.
Should have said:
-9n(5n-5) = 0

2. correct

3. y = y=-5x^2+8x-7 is a parabola, on which lie an infinite number of points.
If you wanted the solution to -5x^2+8x-7 = 0
you are right, there is no solution.

Answer 2

hey first jiskha user