Solving Quadratics

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Solve
(4a + 3)(4a - 3) = 0

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

Tags

CCSS.HSA-REI.B.4B

Factor x²-9x+20=0 and solve.

• (x-10)(x+2); x=-2, 10
• (x+4)(x+5); x=-5, -4
• (x-4)(x-5); x=4, 5
• Not factorable

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:   4x²+16x+15=0

• -5/2,-3/2
• (2x+5)(2x+3)
• -10,-6
• 5/2, 3/2

Tags

CCSS.HSA-REI.B.4B

Solve using square roots

• {49,-49}

• {8,-8}

• {7,-7}

• No Solution

Tags

CCSS.HSA-REI.B.4B

Solve Using Square roots

• {7.48,-7.48}

• No Solution

• {56,-56}

• {26,-26}

Tags

CCSS.HSA-REI.B.4B

Solve using square roots

• {12.88,-12.88}

• {13.22,-13.22}

• {16}

• No Solution

Tags

CCSS.HSA-REI.B.4B

Solve using square roots

• {12,-12}

• No Solution

• {16,-16}

• {34.06,-34.06}

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

CCSS.HSA-REI.B.4B

Solve by using square roots      3x² - 192 = 0

• -32 or 32
• No Solution
• -8 or 8
• -64 or 64

Tags

CCSS.8.EE.A.2