What is 15a^2-6ab-8a^2+20-5ab-31+a^2-ab ?

The solution to 15a^2-6ab-8a^2+20-5ab-31+a^2-ab is 8a^2-12ab-11

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simplify 15a^2-6ab-8a^2+20-5ab-31+a^2-ab

simplify

15 a^{2} - 6 ab - 8 a^{2} + 20 - 5 ab - 31 + a^{2} - ab

8 a^{2} - 12 ab - 11

Solution steps

15 a^{2} - 6 ab - 8 a^{2} + 20 - 5 ab - 31 + a^{2} - ab

Group like terms

= 15 a^{2} - 8 a^{2} + a^{2} - 6 ab - 5 ab - ab + 20 - 31

Add similar elements:

15 a^{2} - 8 a^{2} + a^{2} = 8 a^{2}

= 8 a^{2} - 6 ab - 5 ab - ab + 20 - 31

Add similar elements:

- 6 ab - 5 ab - ab = - 12 ab

= 8 a^{2} - 12 ab + 20 - 31

Subtract the numbers:

20 - 31 = - 11

= 8 a^{2} - 12 ab - 11

12 r^{2} - 27

- 4 x^{2} + 16 x - 15

x (3 x + 10) = 8

3 x - 1 > 2

8 k^{2} - 42 k + 27

What is 15a^2-6ab-8a^2+20-5ab-31+a^2-ab ?
The solution to 15a^2-6ab-8a^2+20-5ab-31+a^2-ab is 8a^2-12ab-11