Question

please do any 3 sums

Factorize the following into perfect squares​

Answer 1

Answer:

1) x²+18x+81=0

x²+9x+9x+81=0

x(x+9) +9(x+9)=0

(x+9) or (x+9) =0

x+9=0 or x+9=0

x= -9 or x= -9

2) x²-18x+81=0

x²-9x-9x+81=0

x(x-9) -9(x-9)=0

(x-9) (x-9) =0

x-9=0 or x-9=0

x=9 or x=9

Step-by-step explanation:

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Answer 2

Answer:

(d) (x+9)²

(e) (2x+3)²

(f) (2x-3y)²

(g) (x-9)²

(h) (5x-4)²

Step-by-step explanation:

Use,

(A+B)² = A²+2AB+B²

(A-B)² = A²-2AB+B²