Question

x²-45x+324=0 find roots by facorisation

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Answer 1

Answer:

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Step-by-step explanation:

Factoring x²-45x+324

x² - 36x - 9x - 324

Step-1 : Add up the first 2 terms, pulling out like factors :

x • (x-36)

Add up the last 2 terms, pulling out common factors :

9 • (x-36)

Step-2 : Add up the four terms of step 1 :

(x-9) • (x-36)

Which is the desired factorization

Final result :

(x - 9) • (x - 36)

take

x-9 = 0 and x -36 = 0

x = 9 and x = 36 are the roots of equation..

i hope it helps you.

Answer 2

Answer:

(9,36)

Step-by-step explanation:

x²-45x+324=0

x²-36x-9x+324=0

x(x-36)-9(x-36)=0.........(€)

(x-9)(x-36)=0...........(#)

x-9=0 or x-36=0

x=9 or x=36.

::::Special trick for you::::

If the co-efficient of x² is 1 then directly write the factors after x during factorisation

for ex. as in this example

factors are -36 & -9

and in (#) step after x there is -9 and -36.

here we can leave the (€) this step.

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