Question

3. Subtract:
(a)6a2 from 10a
(b) –3x2 from 5x2
(C) x2 from 3x + 5
(d) 2a + b from 6a + 4b
(e) – x2 + 10x - 5 from 5x2 + 6x - 7
(f) alb – 5) from b(5 – a)​

Answer 1

Answer:

a) 6a² from 10a

=> 10a -6a²

b) -3x² from 5x²

5x² - (-3x²)

5x²+3x²

=>8x²

c) x² from 3x+5

=>3x+5 - x²

d) 2a+b from 6a+4b

6a+4b - (2a+b)

6a+4b-2a-b

6a-2a+4b-b

=>4a+3b

e) -x²+10x-5 from 5x²+6x-7

5x²+6x-7 - (-x²+10x-5)

5x²+6x-7+x²-10x+5

5x²+x²+6x-10x-7+5

=>6x²-4x-2

f) a(b-5)from b(5-a)

b(5-a) - [a(b-5)]

5b-ab - [ab-5a]

=>5b-ab -ab+5a