Math, asked by sonam95, 1 year ago

find the zeros of quadratic polynomial 4 x squared minus 7

Answers

Answered by sooonnniii

Zeroes of 4x2 - 7.
4x2 - 7 = 0
⇒ 4x2 = 7
⇒ x2 = 7/4
⇒ x = ± √7/4
Therefore, zeroes of the polynomial are √7/4 and - √7/4.

sooonnniii: plzz mark as brainlist

KingAB: Um actully this is wrong as when you multipy your factors you get 16x^2 -7

KingAB: I have solved this check it.

sooonnniii: no its correct

KingAB: if we multiply your factors give 16 not 4 so it becomes incorrect

KingAB: your 3rd step is wrong as. x^2= √7/√4

KingAB: which is equal to √7/2

KingAB: which is the right answer

Answered by KingAB

so the polynomail is
4x^2 -7
(2x -√7)(2x +√7) {these are the factors}

X = √7÷2 or X = -√7÷2 (These are the zeros)

Explaination: Using the identity a^2 -b^2 we get (a+b)(a-b) that is what i have done. Then equated to zero to form the zeros

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