factorise x square - 7 x + 12
Answers
Answered by
3
x^2 -7+12
=x^2 -4x -3x +12
=x(x-4) -3(x-4)
=(x-4)(x-3) {ans}
Answered by
11
Answer:
( x - 3 ) ( x - 4 )
Step-by-step explanation:
x² - 7x + 12
This question can be solved by splitting its middle term such that sum of two numbers be 7 and their products be 12.
Such two numbers are 3 and 4. Their sum is 7 and product is 12
x² - 7x + 12
⇒ x² - 3x - 4x + 12
⇒ x ( x - 3 ) - 4 ( x - 3 )
⇒ ( x - 3 ) ( x - 4 )
Hence, the answer is found.
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