Factorise the following. x²-3x-10
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Answered by
2
Answer:
Given:
x2−3x−10
Find a pair of factors of 10 which differ by 3.
The pair 5,2 works in that 5⋅2=10 and 5−2=3
Hence we find:
x2−3x−10=(x−5)(x+2)
Answered by
0
Answer:
The factors are 5, -2
Step-by-step explanation:
x² - 3x - 10
Factors of -10 are -5, +2
3x can be written in the form of -5x + 2x ....(1)
Substituting it in x² - 3x - 10
x² - 5x + 2x -10 = 0
x ( x - 5 ) + 2 ( x - 5) = 0
( x - 5 ) * ( x + 2 ) = 0
x = 5, -2
Therefore the factors of x² - 3x - 10 are 5, -2.
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