What is 3a(a-1)+1-(2a-a) ?

The solution to 3a(a-1)+1-(2a-a) is 3a^2-4a+1

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simplify 3a(a-1)+1-(2a-a)

simplify

3 a (a - 1) + 1 - (2 a - a)

3 a^{2} - 4 a + 1

Solution steps

3 a (a - 1) + 1 - (2 a - a)

Add similar elements:

2 a - a = a

= 3 a (a - 1) + 1 - a

Expand

3 a (a - 1) : 3 a^{2} - 3 a

= 3 a^{2} - 3 a + 1 - a

Group like terms

= 3 a^{2} - 3 a - a + 1

Add similar elements:

- 3 a - a = - 4 a

= 3 a^{2} - 4 a + 1

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(y^{6} y^{7})^{7}

2 (a + b + 1) - x (a + b + 1) - (a + b + 1)