1. factorise the polynomial 25×2_60×y+36y2
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25x² - 60xy + 36y²
25x² = (5x)²,
so let the first terms be 5x and 5x.(5x ... )(5x ..36y² = (6y)²,
so let the last terms by 6yand 6y.(5x ... 6y)(5x ... 6y)
The outer and inner products are 30xy and 30xy,
which makes 60xy.
Throw in a couple minus signs and you're done
.(5x - 6y)(5x - 6y)
Simplifying,(5x - 6y)²
25x² = (5x)²,
so let the first terms be 5x and 5x.(5x ... )(5x ..36y² = (6y)²,
so let the last terms by 6yand 6y.(5x ... 6y)(5x ... 6y)
The outer and inner products are 30xy and 30xy,
which makes 60xy.
Throw in a couple minus signs and you're done
.(5x - 6y)(5x - 6y)
Simplifying,(5x - 6y)²
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