Question

(4x+5) ^2+(2-3x) ^2=(3+5x) ^2

Answer 1

16x²+40x+25+4-12x+9x²=9+30x+25x²

16x²+40x+25+4-12x+9x²-9-30x-25x²=0

16x²+9x²-25x²+40x-30x-12x+25+4-9=0

-2x+20=0

-2x=-20

x=10