Solving X^2 + Bx + C = 0

Solve the quadratic equation by factoring
a² + 10a + 21 = 0

• ± √21

• -3 , -7

• 3 , 7

• 28 , -7

Tags

CCSS.HSA-REI.B.4B

Convert x² - 9x + 20 = 0 to factored form and solve.

• (x-10)(x+2)=0; x = -2, 10

• (x+4)(x+5)=0; x = -5, -4

• (x-4)(x-5)=0; x = 4, 5

• Not factorable

Tags

CCSS.HSA-REI.B.4B

x^2+4x+3=0

• (x-3)(x+1)

• (x+3)(x+1)

• (x+3)(x-1)

• (x-3)(x-1)

Tags

CCSS.HSA-REI.B.4B

When factoring quadratic trinomials of the form x² + bx + c, what is true about m and n if the factored form is (x + m)(x + n)?

• Their sum is equal to c, and their product is equal to b.

• The sum of b and c is equal to the product of m and n.

• Their sum is equal to b, and their product is equal to c.

• The product of b and c is equal to the sum of m and n.

Solve x² – x – 72 = 0.

• x = -8

• x = -8 or x = 9

• x = 8 or x = -9

• x = 9

Tags

CCSS.HSA-REI.B.4B

The solutions of the quadratic equation 
x²+12x+35=0 are

• x = -5 or x = -7

• x = 5 or x = 7

• x = -35 or x = -1

• x = -9 or x = -4

Tags

CCSS.HSA-REI.B.4B

Solve the equation by factoring:
x² -6x + 8 = 0

• 2, 4

• -2, -4

• -2, 4

• 2, -4

Tags

CCSS.HSA-REI.B.4B

What is another name for the x-intercepts of a quadratic?

• y-intercept

• Zeros

• x-axis

• They don't have another name

Tags

CCSS.HSF-IF.C.7C

The solutions of the quadratic equation 
x²+2x-15=0 are

• x = 3 or x = 5

• x = 5 or x = -3

• x = -5 or x = 3

• x = -3 or x = -5

Tags

CCSS.HSA-REI.B.4B

Factor x² + 6x + 9 and solve for x. 

• (x+3)(x+3); x = -3

• (x+4)(x+5); x=-4, -5

• (x-3)(x-3); x=3

• Not factorable

Tags

CCSS.HSA-REI.B.4B