Question

efectiati , utilizand regulile d calcul cu puteri (a,b,x,y,≠,0)

a) X² × X5=
b) a-²× a³=
c) x³×x⁴:x6=

Answer 1

$a) \quad x^2 \cdot x^5 = x^{2+5} = x^7 \\ \\ b) \quad a^{-2} \cdot a^3 = a^{-2+3} = a^1 = a \\ \\ c) \quad x^3 \cdot x^4 : x^6 = x^{3+4} : x^6 = x^7 : x^6 = x^{7-6}= x^1= x$