Question

2 problemas de termino semejante

Answer 1

) 5a -8a +a -6a +21a = (5 +1 +21)a +(-6 -8)a = 27a -14a = (27-14)a = 13a

>) -2/5bx^2 +1/5bx^2 +3/4bx^2 -4bx^2 +bc^2 =

= (-2/5 -4)bx^2 + (1/5 +3/4 +1)bx^2 = -22/5bx^2 +39/20bx^2 =

= (-22/5 +39/20)bx^2 = -39/20bx^2

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Reducir:

1) 9a -3a +5a = 11a

–> (9 +5)a+(-3)a = 14a -3a = (14-3)a = 11a

2) -8x +9x -x = 0

–> (-8 -1)x+(9)x = -9x +9x = (-9 +9)x = 0x = 0

3) 12mn -23mn -5mn = -16mn

–> (12)mn+(-23 -5)mn = 12mn -28mn = (12-28)mn = -16mn

7) -5a^x +9a^x -35a^x = -31a^x