Question

expand (-2x+5y-3z)²by using suitable identity ​

Answer 1

Answer:

we are using identity (-a+b-c)² = a²+b²+c²-2ab-2bc+2ca

so,

(-2x+5y-3z)² = (-2x+5y-3z) (-2x+5y-3z)

4x²+25y²+9z²-20xy-30yz+12zx

Hence (-2x+5y-3z)² = ..........answer.........

hope help you