Question

If root x+9 = root 784 then x=?

Answer 1

on squaring complete term
x + 81 = 784
x = 784 - 81
x = 703

Answer 2

Proper Question: If √(x + 9) = √784. Then find the value of 'x'.

Answer: The value of 'x' is equal to 775.

Given:

√(x + 9) = √784

To Find:

The value of 'x'.

Solution:

→ According to the question: √(x + 9) = √784

• Squaring both sides of the above equation:

                    ∴ (√(x + 9))² = (√784)²

                    ∴ (x + 9) = 784

                    ∴ x = 784 - 9

                    ∴ x = 775

Therefore the value of 'x' comes out to be equal to 775.

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