Question

x²+10x+20

factorise.........​

Answer 1

Answer:

x^2 + 10x + 20

x^2 +5x + 4x + 20

x (x+5) +4 (x+5)

(x+5)(x+4)

Answer 2

Factorise.❤️

${x}^{2} + 10x + 20$

$\color{red} \huge \underline{1st \: step}$

First multiply last and first term

i.e

${x}^{2} \times 20 = 20 {x}^{2}$

Then in

$\color{blue} \huge \underline{2nd \: step}$

split the middle term ,so that two number sum or subtract would be 10x and multiple of same number be 20x²

$\color {orange} \huge \underline{3rd \: step}$

x²+10x+20

x²+10x+10x+20

x(x+10)+10(x+10)

(x+10)(x+10)

x+10=0

x=(-10,-10)

$hope \: its \: helps \: u \: all$