Question

Preform the subtraction: (5x^2 -3xy +10y^2) - (12x^2 +11xz- 7z^2)

Answer 1

we are given

$(5x^2 -3xy +10y^2) - (12x^2+11xz-7z^2)$

we have to subtract

step-1:  Distribute negative sign

$=5x^2 -3xy +10y^2-12x^2-11xz+7z^2$

step-2:Combine like terms

$=5x^2 -12x^2-3xy -11xz+10y^2+7z^2$

$=-7x^2-3xy -11xz+10y^2+7z^2$

we get

$=-7x^2-3xy -11xz+10y^2+7z^2$............Answer