Solving Quadratics Review warm-up

The factored form of  $x^2+3x-4$  is:

•  $\left(x+4\right)\left(x-1\right)$  

•  $\left(x-4\right)\left(x+1\right)$  

•  $x\left(x-4\right)$  

The factored form of

 $x^2-x$  is:

•  $x\left(x-1\right)$  

•  $x\left(x+1\right)$  

•  $x\left(x\right)$  

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.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

• ±81
• ±9
• ±3
• No real solution

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

What is the standard form for a Quadratic?

• ax²+ bx = - c
• x = -b ± √(b²-4ac) / 2a
• ax² + bx + c
• y = mx + b