Question

Efectuati utilizand formulele de calcul prescurtat :

a) (radical 2 - x) la puterea 2
b) (a - 2radical 3) la puterea 2
c) (1/2 -x) la puterea 2
d) (1/3 x - 1/4 y) la puterea 2
e) (2 radical 2x - 3 radical 3y) la puterea 2
f) (x la puterea 2 - 3b la puterea 2) la puterea 2
g) (1/radical 2 x - 2/radical 3 y la puterea 2) la puterea 2.​

Answer 1

Răspuns:

a)√2²-2√2x+x²=2-2√2x+x²

b)a²-2a×2√3+(2√3)²=a²-4√3a+12

c)(1/2)²-2×1/2x+x²=1/4-x+x²

d)(1/3x)²-2×1/3x×1/4y+(1/4y)²=1/9x²-1/6xy+1/16y²

e)(2√2x)²-2×2√2x×3√3y+(3√3y)²=4×2x-12√6xy+9×3y=8x-12√6xy+27y

f)(x²)²-2x²×3b²+(3b²)²=x la a 4 - 6b²x²+9b la a 4

g)(1/√2x-4/3)²=(3-4√2x/3√2x)²=(3-4√2x)²/9×2x=9-24√2x+32x/18x

Explicație pas cu pas: