Question

Factorul comun:
5x+5y=
4a-4b=
12x+48y=
-xa-a=

Valoarea expresii:
(2m+6)•n= m=-2. n3
x-2xy=. x=5,. y=-1

Answer 1

Salutare!

1) 5x + 5y = 5 • (x + y)

2) 4a - 4b = 4 • (a - b)

3) 12x + 48y = 12 • (x + 4y)

4) -xa - a = a • (-x - 1)

Sau varianta cand scoatem factor comun -a

   -xa - a = - a • (x + 1)

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Valoarea expresiei

(2m + 6) • n =

m = -2

n = 3

(-2 • 2 + 6) • 3 = (-4 + 6 ) • 3 = 2 • 3 = 6

x - 2xy =

x = 5

y = -1

5 - 2 • 5 • (-1) = 5 - 10 • (-1) = 5 + 10 = 15

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