2x^2-5x=4x-102x^2-5x-4x+10=02x^2-9x+10=0(x-2)(2x-5)=0x=2或5/2
2x-5x=4x-10‐7x=‐10x=10∕7
x1 2x2 2/5
2X2-9X-10=0