Question

$efectuati \: \\ c)( \sqrt{3} x - \sqrt{2} y) { }^{2} \\ d)( \frac{1}{3} a + 2x) \\ e)( \sqrt{3 } + 3b) { }^{2} \\ f)( \frac{b}{4} - \frac{a}{3} ) {}^{2}$
Efectuati, imi trebuie urgent pe mâine ​

Answer 1

folosesti formula (a+b)² = a²+2ab+b²

(a-b)² = a²-2ab+b²

c) (√3x)²-2*√3x*(-√2y)+(-√2y)² = 3x²+2√6xy+2y²

d) (1/3a)²+2*(1/3a)*2x+(2x)² = 1/9a²+4/3xa+4x²

e) √3²+2*√3*3b+(3b)² = 3+6√3b+9b²

f) (b/4)²-2*(b/4)*(a/3)+(a/3)² = b²/16-(ab/6)+a²/9

Bafta !