Question

5. Find error and correct it:
a) 4(x - 5) = 4x - 5
b) (a-4) (a-2) = a2 - 8
c) 3x2 + 1/3x2 = 1 + 1 = 2​

Answer 1

Answer:

a) 4x -20

b) a=6

c) 2

Step-by-step explanation:

4(x-5) = 4x - 4*5

Therefore

4x-20

b)

a(a-2) -4(a-2) = a²- 8

a²-2a- 4a -8 = a² - 8

a² -6a-8 = a² - 8

(a square gets cancelled out ,-8 n +8 gets cancelled out )

therefore

-6a

a=6

c)

3*2 + 1/3*2

(3*2 gets cancelled out)

1 + 1 = 2