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Section 8e - Quadratic EquationsPowerPoint Presentation

Section 8e - Quadratic Equations

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Section 8e - Quadratic Equations

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Material Taken From:Mathematicsfor the international student Mathematical Studies SLMal Coad, Glen Whiffen, John Owen, Robert Haese, Sandra Haese and Mark BruceHaese and Haese Publications, 2004

Section 8e - Quadratic Equations

ax2 + c = 0

isolate the squared term

take the square root of both sides

consider

solve

1) 2x2+ 1 = 15

- 2 – 3x2 = 8

- (x – 3)2 = 16

- (x + 2)2 = 11

- 3x(x – 5) = 0

- (x – 4)(3x + 7) = 0

ax2 + c = 0

ax2 + bx = 0

isolate the squared term

take the square root of both sides

consider

solve

set equal to zero

factor out the GCF

use the zero product property

solve

- x2= 3x

- 2x2+ 8x = 0

ax2 + c = 0

ax2 + bx = 0

ax2 + bx + c = 0

set equal to zero

factor out the GCF, if possible

factor

use the zero product property

solve

isolate the squared term

take the square root of both sides

consider

solve

set equal to zero

factor out the GCF

use the zero product property

solve

- x2= x + 30

- 3x2= 4x – 1

- 12x2 – 5x = 2

- Exercise 8E.1, pg255
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- Exercise 8E.2, pg 257
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- Exercise 8E.3, pg 257
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