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Unit 2
Solving Polynomials
by Taking the Square Root
VOCABULARY
Radicand-
Perfect Square-
(Ex 1) Solve quadratic equations
Solve the equation.
a) z2 – 5 = 4
b) r2 + 7 = 4
(Ex 2) Take square root of a fraction
Solve the equation 25k2 = 9.
Checkpoint
1) 3x2=108
A.) 6
B.) 6, -6
C.) 36
D.) 36, -36
CHECKPOINT
1) 3x2 = 108
Checkpoint
2) t2 + 17 = 17
CHECKPOINT
2) t2 + 17 = 17
Checkpoint
3) 81p2=4
A.) 4/81, -4/81
B.) 2/9
C.) 4/81
D.) -2/9, 2/9
CHECKPOINT
3) 81p2 = 4
(Ex 3) Approximate solutions of a quadratic equation