Solve by factoring and square roots

Solve 2x²+4x-16 = 0

• x = 4, x = -4

• x = 2, x = -4

• x = 2, x = -4, x = 0

• x = -2, x = 4

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: x² + 3x - 18 = 0

• x = -3 and x = 6
• x = 3 and x = -6
• x = -9 and x = 2
• x = 9 and x = -2

Tags

CCSS.HSA-REI.B.4B

x² + 15x + 44 = 0

• {-8, 2}
• {-7, 5}
• {-11, -4}
• {-11}

Tags

CCSS.HSA-REI.B.4B

Solve
16a² - 9 = 0

• a = ^-3/₄, ³/₄ 
• a = ^-4/₃, ⁴/₃ 
• a = ^-9/₁₆, ⁹/₁₆ 
• a = ^-16/₉, ¹⁶/₉ 

Tags

CCSS.8.EE.A.2

Factor x²-16

• (x+4)²

• (x-4)²

• (x-16)(x+16)

• (x-4)(x+4)

Tags

CCSS.HSA.APR.C.4

Factor
k²+7x+10

• (k+2)(k+5)
• (k-2)(k-5)
• (k+10)(k+4)
• (k+2)(k-5)

Solve x² + 3 = 19

• x = 4

• x = 6 Or x = -6

• x = 21

• x = 4 OR x = -4

Solve x² + 13 = 113

• x = 13

• x = 10

• x = 9, or x = 11

• x = 10 OR x = -10

9a²=324

• Not real
• -6
• 6,-6
• 12,-12

Tags

CCSS.8.EE.A.2