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4. Algebraic Identities
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Q7 of 84 Page 5

If x2 + = 66, find the value of x -

Here, we will use (a-b)2 = a2 + b2 -2ab


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5

If x - = -1, find the value of x2 +

6

If x + = , find the value of x2 + and x4+

8

If x2 + = 79, find the value of x +

9

If 9x2 +25y2 = 181 and xy = -6, find the value of 3x +5y

Questions · 84
4. Algebraic Identities
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