Question

Приведите уравнение к виду ax^2+bx+c=0 и определите a,b и c$1) 9-7x-13x^2=-7x-10x^2-4 2) 2x(3-4x)=(5x-5)(3x+2)$

Answer 1

1)9-7x-13x^2=-7x-10x^2-4
9-7x-13x^2+7x+10x^2+4=0
-3x^2+0x+13=0
a=-3
b=0
c=13
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2)2x(3-4x)=(5x-5)(3x+2)
6x-8x^2=15x^2-15x+10x-10
6x-8x^2-15x^2+15x-10x+10=0
-23x^2+11x+10=0
a=-23
b=11
c=10