Math Test

Certainly! Here are the modified questions with the answers enclosed in the appropriate tags:

a. Factorise $a^2 + 4a$

a (a + 4)

$a(a + 4)$

b. Factorise $3x + 4x^2$

\(x(4x + 3)\”)

c. Factorise $4x^2 – x$

\(x(4x – 1)\”)

d. Factorise $7x – 3x^2$

\(x(7 – 3x)\”)

e. Factorise $2x^2 + 4x$

\(2x(x + 2)\”)

f. Factorise $6x – 3x^2$

\(-3x(x – 2)\”)

g. Factorise $12x + 16x^3$

\(4x(3 + 4x^2)\”)

h. Factorise $25x^2 – 15x^3$

\(5x^2(5 – 3x)\”)

i. Factorise $30x^3 + 10x^2$

\(10x^2(3x + 1)\”)

j. Factorise $80y^3 – 30y^2$

\(10y^2(8y – 3)\”)

k. Factorise $12x + 15x^2 – 18x^3$

\(-3x(6x^2 – 5x – 4)\”)

l. Factorise $4a^3 – 6a + 8a^2$

No further factorization possible.

x={2}{7}/{9}

x = 31/4 + 71/2

(x+3)2 = 7/3

(x+3) / 2 = 7 / 3