Question

5x^2+8x+3 find zero
plz help now​

Answer 1

Answer:

-1, -3/ 5

Step-by-step explanation:

Zeroes of a polynomial are the values of x for which the value of polynomial{f(x)} is zero.

Let f(x) = 5x² + 8x + 3

Rationalizing f(x)

For rationalizing, we break down the middle term in such a way that it is equal to the sum of two numbers which form the product of the other two terms.

=> 5x² + 5x + 3x + 3

=> 5x(x + 1) + 3(x + 1)

=> (x + 1)(5x + 3)

Placing this equal to zero.

(x + 1)(5x + 3) = 0

either

x + 1 = 0

x = -1

or

5x + 3 = 0

x= -3/ 5

Therefore, the zeroes of the given polynomial are -1, and-3/ 5.

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Hope this helps!

Answer 2

Answer:

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