Question

5((1-x)2)-6(x2-3x-7)=(x-3)-2x(x+5)-2

Answer 1

5((1-x)²)-6(x²-3x-7)=(x-3)-2x(x+5)-2

5(1-2x+x²)-6x²+18x+42=x-3-2x²-10x-2

5-10x+5x²-6x²+18x+42=2x²-9x-5

47+8x-x²=2x²-9x-5

8x+9x-x²+x²=2-47-5

17x=2-52

17x=-50

x= -50/17

x= -2,941