Question

express the following perfect square trinomial as a square of a binomial in r²-16r+64 ?

Answer 1

Answer:

r^2 - 16r + 64

Using identity [ (a-b)^2 = a^2 - 2ab + b^2]

(r)^2 - (8+8)r +64

r^2 - 8r - 8r + 64 { opening brackets}

r (r-8) - 8(r -8) { taking commons}

(r-8) (r-8)

(r-8)^2

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