Question

sendo a=-1 , b=o , x=2 e y=10 calcule :
a) 2x-5
b) 3a+2y
c)x²+7x
d)5+x-(5x-2)
e)10y-10x
f)a²-2ab+b²

Answer 1

a)15
b)24
c)13
d)12
e)18
f)3

Answer 2

a) 2*2-5= 4-5= -1<br /> b) 3*(-1)+2*10=-3+20=17 c) (-1)²+7*2=1+14=15 d)5+2-(5*2-2)=7-8=-1 e)10*10-10*2=100-20=80 f)(-1)²-2*(-1)*0+0²=1