1.

If a and b are the roots of equation 2x²+4x-5=0then find a+b and ab​

Answer»

Answer:

Step-by-step EXPLANATION:

If alfa and beta are ROOTS of equation then we know that

alfa + beta = -b/a

= -4/2

= -2

a + b = -2

alfa x beta = c/a

= -5/2

ab = -5/2

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