Question

solve 3x^2-4-x ( class 10 maths)​

Answer 1

Answer:

3X - 2 = 4 - X

3X + X - 2 = 4 - X + X Add X to both sides.

Want X on the LEFT and number on the right.

4X - 2 = 4

4X - 2 + 2 = 4 + 2 Add 2 to both sides.

4X = 6

4X/4 = 6/4 Divide both sides by 4.

X = 6/4

X = 3/2 or 1 1/2 or 1.5

ANSWER: X = 1.5 or 1 1/2. or 3/2

CHECKING:

DOES 3X - 2 = 4 - X ?

3X - 2 = (3)(3/2) - 2 = 9/2 - 2 = 9/2 - 4/2 = 5/2 = 2 1/2

4 - X = 4 - 3/2 = 8/2 - 3/2 = 5/2 = 2 1/2

YES! 3X - 2 = 4 - X

Explanation:

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