Question

factorise the following expressions

Answer 1

1.
${a}^{2} + 10a + 24$
a^2+6a+4a+24
a(a+6)+4(a+6)
(a+6)(a+4)

2.
${x}^{2} + 9x + 18$
x^2+3x+6x+18
x(x+3)+6(x+3)
(x+3)(x+6)

3.
${p}^{2} - 10p + 21$
p^2-7p-3p+21
p(p-7)-3(p-7)
(p-7)(p-3)