Question

9x2 + 6x +7
9x2 + 6x + 7 should be added to 12
EXER
1. Add :
(a) 7x2 + 3x, 9x - 5x2
(c) 5x2 – 2x – 3, 10x2 – 5, -7x2 + 6x + 9
156​

Answer 1

Step-by-step explanation:

1) a.( 7x^2+3x)+(9x-5x^2)

=>7x^2+3x+9x-5x^2

=2x^2+12x is the final answer

Answer 2

Answer:

here's your answer, hope you like it...

Step-by-step explanation:

The thing is that we have to simply just add in addition. And in case we are subtracting, The last line of equation is to be changed. And we have to subtract it as usual by putting the signs -,+ in the case when needed. This is the process. Hope it will help you.... ;-)