Question

What are the x-intercepts for the quadratics below(show all work in order

Answer 1

Answer:

Step-by-step explanation:

The x intercepts occur when the quadratic is equal to zero.

1.

x^2-7x-18=0 factoring we get

(x-9)(x+2)=0 since multiplying anything by zero is zero the x intercepts occur when

x=-2 and 9

2.

2b^2+17b+21=0

2b^2+14b+3b+21=0

2b(b+7)+3(b+7)=0

(2b+3)(b+7)=0

b=-7 and -1.5