x square +2x-3 factorise
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Answer:
(x+3)(x-1)
Step-by-step explanation:
(x+3)(x-1)
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Explanation: Zeros of ax2+bx+c are given by quadratic formula −b±√b2−4ac2a , however, such a quadratic function can be factorized, if the discriminant (b2−4ac) is square of a rational number. In x2+2x+3 , discriminant is 22−4⋅1⋅3=4−12=−8 and hence negative.
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