Find the roots of the following quadratic equations by factorisation:
(i) x2 -3x – 10 = 0
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Answers
Answered by
4
Given :-
x² - 3x - 10
To Find :-
Roots
Solution :-
Spilt the middle term
x² - (5x - 2x) - 10 = 0
x² - 5x + 2x - 10 = 0
x(x - 5) + 2(x - 5) = 0
(x - 5)(x + 2) = 0
Either
x - 5 = 0
x = 5
or,
x + 2 = 0
x = -2
Answered by
1
Answer:
x = 5 and x = -2
Step-by-step explanation:
x^2 - 5x + 2x - 10 = 0
x(x - 5) + 2( x - 5) = 0
(x - 5) (x + 2) = 0
Therefore x = 5 and x = -2
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