BECE Mathematics 2021 Paper

Let's group themThe 3ax + $6 a$ GroupBring out which numbers or letters are common in both expressionsYou can see 3 can go into 6, hence 3 is common$a$ also appeared at both sides, hence $a$ is also common$3 a(x+2)$ The - $x$ - 2 Group$\; -x = -1 \times x$$\; -2 = -1 \times 2$Hence $-x-2 = -1 \times x - 1 \times 2$- 1 is common$\; -1 \times x - 1 \times 2 = -1(x+2)$$\; 3 a x+6 a-x-2 = 3 a(x+2)-1(x+2)$$\; 3 a(x+2)-1(x+2)$$(x+2)$ is also common, hence bring it out$(x+2)(3 a-1)$$(x+2)(3 a-1)$ is the same as $(3 a-1)(x+2)$, you can change the order of multiplication and the result will still be the same