Question

b. Factorise: x2 +18X+81​

Answer 1

Answer:

(x+9)(x+9)

Step-by-step explanation:

sum=18

product=81

9 9

x2 + 9x +9x +81

x(x+9) +9(x+9)

(x+9)(x+9)

Answer 2

Answer:

hope you understand in not report

Step-by-step explanation:

x2+18x+81=(x+9)2 Explanation: As 81 is the square of 9 and middle term 18 is double of this number, (compare it with (x+a)2=x2+2ax+a2) Hence x2+18x+81