Question

1) Scrie ca putere,follosind factorul comun.

a) 7+6x7
b) 2x3 supra 14+25x3supra 14
c) 3x5 supra 15+2x5 supra 15
d) 3 supra 6 +18x3 supra 4

Answer 1

a) 7+6*7 = 7 (1+6) = 7*7 = 7^2

b) 2*3 / 14 + 25*3/14 = 3/14 (2/14 + 25/14) = 3/14* 27/14 = 81/14 = 3^4 / 14

c) 3*5 / 15 + 2*5 / 15 = 5 / 15 (3/15 + 2/15) = 5/15 * 5/15 = 25/15 = 5^2 / 15

d) 3/6 + 18*3 / 4 = 3*2/12 + 18*3*3 / 12 = 3/12 (2/12 + 18*3 / 12) = 3/12 ( 2/12 +  54/12) = 3/12 *56/12 = 168/12