1) 7(x - 3) + 10x(3 - x) =
= 7(x - 3) - 10x(x - 3) =
= (x - 3)(7 - 10x)
2) 4(x - 5) - (5 - x)² =
= 4(x - 5) + (x - 5)² =
= 4²(x - 5) =
= 16(x - 5)
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Разложите на множители 7(x-3) +10x(3-x) ; 4(x-5)-(5-x)²
1) 7(x - 3) + 10x(3 - x) =
= 7(x - 3) - 10x(x - 3) =
= (x - 3)(7 - 10x)
2) 4(x - 5) - (5 - x)² =
= 4(x - 5) + (x - 5)² =
= 4²(x - 5) =
= 16(x - 5)