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Factor each of the following as a difference of squares

a) x^2−36

b) z^2−49

c) y^2−81

d) b^2−4

d) −w^2 +1

e) 4a^2−36

f) t^2−9

g) 5x^2−45y^2

What does the quadratic formula do?

Who invented the zero number?

What is triangle?

4.  Factor the following as a difference of squares.

a) x^2−25

b) x^2−169

c) 81 x^2−100

d) 64−121x^2

What is 2 x 2?

What is 10 x 10?

Solve for 8x - 3 = 6x - 9