factoring?

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Use a special product formula to factor the perfect square trinomial for 4x^2-20x+25???

2007-03-08 03:34:56 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

= (2x - 5).(2x - 5) = (2x - 5) ²

2007-03-08 03:40:51 · answer #1 · answered by Como 7 · 0⤊ 0⤋

(2x-5)^2

2x-5 2x-5=4x^2-20x+25

square the first and third number and multiply by 2 and doubled the answer on the 2nd number of the trinomial.

2007-03-08 12:10:05 · answer #2 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋

4x^2-20x+25
=(2x)^2-2*2x*5+(5)^2
=(2x-5)^2

2007-03-08 12:01:08 · answer #3 · answered by alpha 7 · 0⤊ 0⤋

a^2 + ab + b^2 = (ax - b)^2

([sqrt a] (x) - [sqrt b])^2)

( 4^1/2 (x) - (25^1/2))^2

(2x-5)^2

2007-03-08 11:45:53 · answer #4 · answered by piri82 3 · 0⤊ 0⤋