Question

1. The pair of zeroes of the polynomial 2 x square +14x + 20 is equal to
(1) 2 and 5
b)- 2 and - 5
(c) 2and - 5
(d) - 2 and 5

Answer 1

The values of x are -2 and -5 respectively.

Step-by-step explanation:

2x^2 +14x + 20 = 0

x^2 + 7x + 10 = 0

(x^2 + 2x) + (5x +10) = 0

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

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

Now

x + 2 = 0 and x + 5 = 0

x = -2 and x = -5

Hence the values of x are -2 and -5 respectively.

Also learn more

5x+2y=10;x+y=10  find the value of x and y​?

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Answer 2

Step-by-step explanation:

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