7. Factorize the following algebraicexpressions by splitting the(i) x² 21x+1o8 About the author Ava
Step-by-step explanation: [tex] {x}^{2} – 21x + 108[/tex] [tex] {x}^{2} – 12x – 9x + 108 = 0 [/tex] x(x-12)-9(x-12)=0 [tex](x – 12)(x – 9) = 0[/tex] x=12 or 9 Reply
x^2+21x+108
x2+12x+9x+108
x(x+12)+9(x+12)
=(x+12)(x+9)
Step-by-step explanation:
[tex] {x}^{2} – 21x + 108[/tex]
[tex] {x}^{2} – 12x – 9x + 108 = 0 [/tex]
x(x-12)-9(x-12)=0
[tex](x – 12)(x – 9) = 0[/tex]
x=12 or 9