Good evening guys❤Today's Question ✌Q.By using Standard formula, e

1.	Good evening guys❤Today's Question ✌Q.By using Standard formula, expand the following:-(i)(2x+7y)^2(ii)(1/2x+2/3y)^2(iii)(3x-1/2x)^2Answer this simple question?
Answer» FORMULA to be used :- (a + b)² = a² + b² + 2ab Solution :- (i) (2X + 7Y)² = (2x)² + (7y)² + 2 × 2x × 7y = 4x² + 49y² + 28xy ________________ (II) (1/2x + 2/3y)² = (1/2x)² + (2/3y)² + 2 × 1/2x × 2/3y = 1/4 x² + 4/9 y² + 2/3 xy ________________ (iii) (3x - 1/2y)² = (3x)² + (-1/2 y)² + 2 × 3x × -1/2 y = 9x² + 1/4 y² + 6X × -1/2 y = 9x² + 1/4 y² - 3xy

Good evening guys❤Today's Question ✌Q.By using Standard formula, expand the following:-(i)(2x+7y)^2(ii)(1/2x+2/3y)^2(iii)(3x-1/2x)^2Answer this simple question?

Answer»

FORMULA to be used :-

(a + b)² = a² + b² + 2ab

Solution :-

(i) (2X + 7Y)²

= (2x)² + (7y)² + 2 × 2x × 7y

= 4x² + 49y² + 28xy

________________

(II) (1/2x + 2/3y)²

= (1/2x)² + (2/3y)² + 2 × 1/2x × 2/3y

= 1/4 x² + 4/9 y² + 2/3 xy

________________

(iii) (3x - 1/2y)²

= (3x)² + (-1/2 y)² + 2 × 3x × -1/2 y

= 9x² + 1/4 y² + 6X × -1/2 y

= 9x² + 1/4 y² - 3xy

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Good evening guys❤Today's Question ✌Q.By using Standard formula, expand the following:-(i)(2x+7y)^2(ii)(1/2x+2/3y)^2(iii)(3x-1/2x)^2Answer this simple question?​

FORMULA to be used :-

Solution :-

________________

________________

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Good evening guys❤Today's Question ✌Q.By using Standard formula, expand the following:-(i)(2x+7y)^2(ii)(1/2x+2/3y)^2(iii)(3x-1/2x)^2Answer this simple question?