What is the correct splitting of the middle term in (20x^2-43x+21=0)?

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Correct answer: (20x^2-28x-15x+21=0)

Here (ac=420) and (-28+(-15)=-43), so the correct split is (-28x-15x). In exams, even when (ac) is large, match both sum and product.

What is the correct answer to this question?

(20x^2-28x-15x+21=0)

Why is this the correct answer?

Here (ac=420) and (-28+(-15)=-43), so the correct split is (-28x-15x). In exams, even when (ac) is large, match both sum and product.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Quadratic Equations. Topic: Methods of Solving Quadratic Equations.

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