What is the factored form of the expression? 49b^2 – 64

(7b-8) (7b+8)

Step-by-step explanation:

49b^2 – 64

This is the difference of squares

(a^2 -c^2) = (a-c) (a+c)

a^2 = 49b^2   so a = 7b

c^2 = 64  so c = 8

(49b^2 -64) = (7b-8) (7b+8)

step-by-step explanation:

10.50 + taxes which added up to 11.50

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

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