Question

4. Simplify each expression by combining lik-
(i) 12b-7b-3b
(iii) 2a - (b-a)-b-(a - b)
(v) 10m2 - 9m + 7m - 3m2 - 5m - 8
(vii) (x² + 3x - 2)-(4x - 2x - 2)
.. Subtract:
(i) 18y2 from 3y2
(iii) 17a² from 23a?
(v) x² - y²x + z from y?x - x? - Z
(vii) x2-3xy - 2y2 from 2​

Answer 1

Answer:

the answers are:

1. 12b-7b-3b=12b-10b=2b
2. 2a-(b-a)-b-(a-b)=2a-b+a-b-a+b=2a-b

1. -15b^2
2. 23a-17a^2