Finding Zeros of Quadratic Functions

Find the zeros of the function f(x) = $3x^2-20x-7$  

• -7,  $\frac{1}{3}$  

• 7,  $\frac{1}{3}$  

• 7,  $-\frac{1}{3}$  

• -7,  $-\frac{1}{3}$  

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Find the zeros of the function

 $f\left(x\right)=\ x^2-10x+21$  

• 7, 3

• -7, -3

• 1, 21

• -1, 21

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Find the zeros of the function  $f\left(x\right)=\ x^2-8x-20$  

• -4, 5

• 4, -5

• -10, 2

• 10, -2

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Find the zeros of the function  $f\left(x\right)\ =\ x^2-2x-24$  

• -6, 4

• 6, -4

• 12, -2

• -12, 2

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Find the zeros of the function  $f\left(x\right)=\ x^2-81$  

• 9

• -9,9

• 0, -9

• -9

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Find the zeros of the function  $f\left(x\right)=x^2-7x$  

• 0, -7

• -7

• 7

• 0, 7

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Find the zeros of the function  $f\left(x\right)=6x^2+22x-8$  

•  $\frac{2}{6}$  , -4

•  $-\frac{1}{3}$  , -4

•  $-\frac{2}{6}$  , -4

•  $\frac{1}{3}$  , -4

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Find the factors of the function  $f\left(x\right)=\ x^2-25$  

• x(x-25)

• (x-5)(x-5)

• (x-5)(x+5)

• x(x+25)

Tags

CCSS.HSA.APR.C.4

Find the factors of the function  $f\left(x\right)=7x^2-28x$  

• x(7x-28)

•  $7\left(x^2-4x\right)$  

• 7x(x-4)

•  $7x^2\left(x-4\right)$  

Find the factors of the function:  $x^2-6x-16$  

• (x-8)(x+2)

• (x+8)(x-2)

• (x-16)(x+1)

• (x-16)(x+10)