Question

10. Verify if x = - 15, y = 21 and z = 9
a) x (y + 2) = x xy + X X Z
b) x + y = y + x​

Answer 1

a.x(y+2)=xxy +xxz
=-15(21+2)=-15*-15*21+-15*-15*9
=-345=4725+2025