Question

va rog mult ,cine face ex astea ii șmecher:)) imi trebuie urgent serios​

Answer 1

1. a) 7x

b) 5x

c) 3x

d)$11x^{2}$

e)$11x^{2}$

f)$2x^{2}$

g)$-8x^{2}$

h)$28x^{2}$

i)$6x^{3}$

2)5a-2a+6a=3a+6a=9a

b)7a+4a-6a=11a-6a=5a

c)$3a^{2} -27a^{2} +a^{2}$=$-23a^{2}$

d)$8a^{2} +3a^{2} -9a^{2} =11a^{2} -9a^{2} =2a^{2}$

e)$10a^{3}-5a^{3} -8a^{3}  =5a^{3} -8a^{3}=-3a^{3}$

f)$8a^{3} -19a^{3} +15a^{3} =-11a^{3}+15a^{3}=4a^{3}$

3) a) 5x-6-3x+7=2x+1

b)2x+5-8x-9=-6x-4

c)13-7x-2x-6=7-9x

d)15x-8-5x-1=10x-9

e)11+3x-9-9x=2-6x

f)10+6x-4-8x=6-2x

g)$3x^{2} -6x-7x^{2} +2x=-4x^{2} -4x$

h)$4x-9x^{2} -5x^{2} -7x=-3x-14x^{2}$

i)$11x-x^{2} +17x^{2} -5x=6x+16x^{2}$