Question

Q6. Sum of zeroes of polynomial x2 + 7x +
10 is:
(a) -7
(b) 7
(C) 1/7
(d) 10​

Answer 1

Step-by-step explanation:

,please refer to the above attachment ent

Answer 2

Given :-

x² + 7x + 10

To Find  :-

Sum of zeroes

Solution :-

Factorizing the middle term

x² + 7x + 10 = 0

x² + (2x + 5x) + 10 = 0

x² + 2x + 5x + 10 = 0

x(x + 2) + 5(x + 2) = 0

(x + 2)(x + 5) = 0

Either

x + 2 = 0

x = 0 - 2

or,

x + 5 = 0

x = 0 - 5

x = -5

So,

Zeroes = -5 and -2

-5 + (-2)

-5 -2

-7

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