1.

Factorise 3a^2 - b + 2

Answer»

ANSWER:

a!1

Step-by-step EXPLANATION:

3a  {}^{2}  - b  - 2 = 0 \\ 3a {}^{2} - 3a + 2a  - 2= 0 \\  3a (a - 1) + 2(a - 1) = 0 \\ (a - 1)(3a + 2) = 0 \\ a - 1 = 0 \: or \: 3a + 2  = 0 \\ a = 1 \: or \: 3a =  - 2 \\ a = 1 \:  \: or \: a =  - 2 \div 3 \\



Discussion

No Comment Found

Related InterviewSolutions