Question

I am confused in + + = - and - + = - in long questions like -3p 2 + 8x 2 y+[-10x 2 y} i am confused i sometimes do - in place of + and + in place of -

Answer 1

See the logic is clear........... +,+= + ,,,,,,,,,,+,- or -,+= - ,,,,,,,,,, -,- = +........... For eg.---- 5+5=10, -6-4= -10( here two - signs are there so the numbers will be added but we'll put - sign.), -7+5= 2, -7+6= -1, -5 × -2= 10, -6 × 5= -30, -4/-2= 2, -4/2= -2......... In addition and subtraction the sign of greater no. Is put but in multiplication and division the no. Of signs are taken. If there are even no. - of signs then it get cancelled but odd are not......... I hope u understood.