Solving Quadratic Equations by Factorisation

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.4

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.4

CCSS.HSA.REI.A.1

CCSS.HSA.SSE.A.2

Solve for a by factoring.
a² + 2a - 24 = 0

• a = -6, 4
• a = 6, -4
• a = 12, -2
• a = 8, -3

Solve by factoring
a² - 9a + 8 = 0

• a = -8, 1
• a = -8, -1
• a = 8 , 1
• a = 2,4

Solve by factoring
p² + 12p + 35 = 0

• {-7, 5}
• {-9, -5}
• {-7, 0}
• {-7, -5}

Solve by factoring
n² - 15n + 56 = 0

• {3, 0}
• {-8, 8}
• {-3, 6}
• {7, 8}

x² - 6x - 7 = 0

• {-1, 7}
• {-3, -1}
• {5, 6}
• {-3, 3}

Tags

CCSS.HSA.REI.B.4

n² + 6n - 27 = 0

• {-3, 10}
• {5, 14}
• {-12, 4}
• {-9, 3}

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

CCSS.HSA.CED.A.1

x² + 15x + 44 = 0

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

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

Solve.
n² - 2n = 0

• n = 2 and 0
• n = -2 and 0
• n = 2
• n = 0

Tags

CCSS.HSA.REI.B.4