Question

9/45.

Scrie ca putere ,folosind factorul comun.

A) 7+6x7;
B)2x3supra14+25×3supra14;
C)3×5supra15+2×5supra15;
Si ultimul
D)3supra6+18×3supra4
VA ROOG REPEDE E 1 NOAPTEA

Answer 1

Răspuns:

Explicație pas cu pas:

a)  7 + 6 × 7 = 7 × ( 1 + 6 ) = 7 × 7 = 7²

b)  2 x ( 3/14 ) + 25 x ( 3/14 ) = (3/14 ) x ( 2 + 25 ) = (3x27)/14 = 3³/14

c)  3 x 5/15 + 2 x 5/15 = ( 5/15 ) x ( 3 + 2 ) = (5x5)/15 = 5²/15 = 5/3

d)  3/6 + 18 x ( 3/4 ) = 1/2 + 9x3/2 = 1/2 x ( 1 + 27 ) = 28/2 =14

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3/6 = ( 3:3)/(6:3) = 1/2

18 x 3/4 = (9x3)/2 = 27/2