8.6 Solving Quadratics I

Factoring A

100

Factor

x^2+17x+42

(x+3)(x+14)

200

Factor

a^2+8a-48

(a + 12)(a - 4)

300

Factor

44+15h+h^2

(h + 4)(h + 11)

400

Factor

-24-10x+x^2

(x - 12)(x + 2)

Factoring B

100

Factor

y^2-17y+72

(y - 8)(y - 9)

200

Factor

n^2-2n-35

(n - 7)(n + 5)

300

Factor

40-22x+x^2

(x - 20)(x - 2)

400

Factor

-42-m+m^2

(m - 7)(m + 6)

Solving Quadratics A

100

Solve

x^2-7x+12=0

x={3, 4}

200

Solve

c^2+10c+9=0

c={-1, -9}

300

Solve

x^2-6x=27

x={9, -3}

400

Solve

n^2-120=7n

n={15, -8}

500

Solve

y^2-90=13y

y={18, -5}

Solving Quadratics B

100

Solve

y^2+y=20

y={-5, 4}

200

Solve

a^2+11a=-18

a={-2, -9}

300

Solve

x^2-18x=-32

x={2, 16}

400

Solve

d^2+56=-18d

d={-4, -14}

500

Solve

h^2+48=16h

h={4, 12}