5 x-2 y-7 and x y-2- find the value of 5 x-2 y2A- 129B- 127C- 145D- 133

The correct option is A 129 5x 2y = 7 and xy = 2 ∵ (a + b)^2 = a^2 + b^2 + 2ab or, (a + b)^2 = a^2 + b^2 2ab + 4ab [Add and subtract 2ab] ⇒ (a ...

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Algebraic Identity: (a + b)^2 = a^2 + b^2 + 2ab

5 x-2 y=7 and...

Question

$5 x - 2 y = 7 a n d x y = 2$ , find the value of $(5 x + 2 y)^{2}$

127

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129

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133

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145

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Similar questions

5 x - 2 y = 7

x y = 2

(5 x + 2 y)^{2}

If $5 x - 2 y = 7$ and $x y = 2$ , then find the value of $(5 x + 2 y)^{2}$

x = - 1

y = 2

{2 x}^{2} - 3 y + {3 x}^{2} + {5 x}^{2} + 5 x - 7 - 7 x + 2 y

If $5 x - 4 y = 7 a n d x y = 8$ , find : $125 x^{3} - 64 y^{3}$

If x : y = 4 : 7, Find the value of (3x+ 2y) : (5x + y).

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