# Mate

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MATEMATICAS

CORTEZ DE LOS ANGELES JEMIRA IRACEMA

1. =5xa + 7xb - 3 + 3xb - 2xa + 9 =3xa + 10xb + 6

2. =3xa+ 3yb

3. = 7t2n + 6tn -1 -3tn+ 5t2n – 4+ t3n = t3n + 12t2n + 3tn -5

4. = 2x

5. = 8xm +12yn +10yn +6xm =14xm+22yn

6. = -xm+7yn -4yn +10xm =9xm -3yn

7. = 2x3m +3x2myn +xmy2m -5x2myn +2xmy2n-y3n= -2x2myn +3xmy2n +2x3m -y3n

8. = xmyn+2xm -3yn -6

9. = 6xmyn -8xm +3yn -4

10. = 3a2x -4ax +6ax -8 = 3a2x +2ax -8

11. = 2x3m -5x2m +7xm +6x2m -15xm +21= 2x3m +x2m -8xm +2112. = x2m -4xm +4xm -16 = x2m -16

13. = 4t2m -10tmxn +10tmxn -10x2n= 4t2m -10x2n

14. (xa+ yb-zc) (xa+yb+zc)= x2a+xayb+xazc+ybxa+y2b+ybzc-zcxa-zcyb-z2c= x2a+2xayb+y2b-z2c15. (x2m-1) (x3n+2)= x2m3n+2x2m-x3n-2

16. (ym+6)2= (ym)2+2(ym) (6)+62=y2m+12ym+36

17. (2xm+3yn)2=(2xm)+3yn)2=(2xm)2+2(xm)(3yn)+3yn)2=4x2m+12xmy+9y2n

18.xy[(x+y)2-(x-y)2]=xy[x2+2xy+y2-(x2-2xy+y2)]=xy[x2+2xy+y2-x2+2xy-y2= xy(4xy)= 4x2y2

19. 3{x2-5[x+2(3-5x)]}=3{x2-[x+6-10x]}=3{x2-5x-30+50}=3x2-15x-90+150x= 3x2+135x-90

20.=2x{3x2-x+6x-2-[x+2(x2+3x-x-3)]}=2x{3x2+5x-2-[x+2x2+6x-2x-6]}=2x{52+5x-2-x-2x2-6x+2x+6}= 2x{x2+4}= 2x3+8x

21.

i. tm+1
22.
ii. -t2mtmiii. _________
iv. tm+1
v. -tm+1
vi. _____
1. 2

2. X2+1
23.
vii. -x3m-2x2m
viii. _____________ix. Xm+5
x. -xm-2
xi. _____
3. 3

a. X2m-2xm+3
a. 24
24.
xii. -2x3m-x2m
xiii.__________________
xiv. -4x2m +4xm+6
xv. 4x2m+2xm
xvi. _______________
4. 6xm+6
b. -6xm-3
c. ______
d. 3...