Algebra og regne med bogstaver

Reduktion

100

3a+a+6a+a

11a

200

5a+7b+b

5a+8b

300

3a+6ab+a+b

4a+6ab+b

400

3a+6ab-4b+10ab

3a+16ab-4b

500

-7ab+a-b-a+5ab-2

-2ab+b-2

Led

100

-3a+2+2

tre led

200

4a+5+6+3abc

fire led

300

abc+ab+c

tre led

400

-c-cd+a+b+5+7+8

syv led

500

3a+4a-3a-abcd+a

fem led

Hæve parenteser

100

5(a+2)

5a+10

200

-4(a-b)

-4a+4b

300

4a(a+10)

4a²+40

400

6a(7+2b)-3(a+b)

42a+12ab-3a-3b

Reduceret til: 39a+12ab-3b

500

-a(a+2a)+a(b-3)+4

-a²-2a+ab-3a+4

Reduceret til: -a²+ab+4-5a

Gange parenteser

100

(4+2)(5+2)

42

200

(x+1)(1+2)

3x+3

300

(a+b)(a+b)

a²+b²+2ab

400

(2a+2)(7a+b)+5

14a²+2ab+14a+2b+5

500

(2a-b)²

4a²-4ab+b²

Kvadratsætninger

100

(a+b)²

a²+b²+2ab

200

(a-b)²

a²+b²-2ab

300

(a+b)(a-b)

a²-b²

400

(2a+3b)²

4a²+6ab+6ab+9b²

Reduceret til: 4a²+12ab+9b²

500

(2a+b)²

4a²+4ab+b²