A 1, n/m 2, (b/(a-x)-b/a) 3,6.63 *10-34 to the power of 4,0.00004.
2 1, 1 2, 100 3, 1/25 4, 100
Three 1, 10 to the fifth power of 2. 10 to the fifth power 3,-1. 12* 10 to the fifth power 4,-1. 12* 10 to the fourth power.
4. Items 2, 4, 5 and 7 belong to one category, and the rest belong to one category.
Five 1, (1-X) 2, the square of c 3, 2a +a- 14 4, 6x +3x-6.
Six 1, b/2a 2, -x/3z 3, 1/2x 4, (x-y)/(x+y)
Seven 1, b/abx a/abx 2, by/(ay-xy) c/(ay-xy) 3,2 (x+2)/(x+1) (x+2) 4, (2x-5)/(4x
8 pieces 1, x/x-y 2, 4/9 squared 3(xy), (2b-2a)/a 4, (8-5a)/(a- 1) (2-a)
Nine 1, x = 2 2, x = 5 3, x=3.
Ten (1/n) (a1+a2+a3+...+an)
Solution 1 1: If car B travels x kilometers per hour, car A travels (x+ 10) kilometers per hour.
450/(X+ 10)=400/X
400X+4000=450X
4000 = 50 times
X=80 X+ 10=90
Twelve solutions: suppose the manual translates x words per minute, then the receiver translates 75X words per minute.
3000/X-3000/75X= 148
3000/X-40/X= 148
3000-40= 148X
X=20 75X= 1500
Thirteen 1, the square of b /(a-b) 2, (x-1)/(x+1) 3,2b/(a-b) 4,2/y.
XIV 1/u+ 1/v = 1/f
1/24+ 1/8= 1/f
1/24+3/24= 1/f
1/6= 1/f
f=6
XV P 1/V2=P2/V 1
P 1*V 1=P2*V2
1.0 1 * 100000 * 2 = 3.03 * 100000 * V2
2.02=3.03*V2
2=3*V2
V2=2/3
Sixteen 1, the square of A+1/a = the square of (a+1/a)-2 =2.
2, the square of A+1/a = the square of a-1/a +2=4.25.
Seventeen 1 is -2x times the previous formula.
2, -5 12*x to the power of 10
Give it to me! ! ! ! ! If you don't give it to me, I won't scold you, really, absolutely! ! ! ! )
88 888 8888 Goodbye