Find the squre root of 25x^2-40xy+16y^2
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Answer:
(52x2 - 40xy) + 24y2
STEP3:Trying to factor a multi variable polynomial
3.1 Factoring 25x2 - 40xy + 16y2
Try to factor this multi-variable trinomial using trial and error
Found a factorization : (5x - 4y)•(5x - 4y)
Detecting a perfect square :
3.2 25x2 -40xy +16y2 is a perfect square
It factors into (5x-4y)•(5x-4y)
which is another way of writing (5x-4y)2
How to recognize a perfect square trinomial:
• It has three terms
• Two of its terms are perfect squares themselves
• The remaining term is twice the product of the square roots of the other two terms
Final result :
(5x - 4y)2
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