What is the answer to 2a^2-[a+[2(a-1)(a+3)]]=26 ?

The answer to 2a^2-[a+[2(a-1)(a+3)]]=26 is a=-4

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2a^2-[a+[2(a-1)(a+3)]]=26

2 a^{2} - [a + [2 (a - 1) (a + 3)]] = 26

a = - 4

Solution steps

2 a^{2} - [a + [2 (a - 1) (a + 3)]] = 26

2 a^{2} - (a + 2 (a - 1) (a + 3)) = 26

Expand

2 a^{2} - (a + 2 (a - 1) (a + 3)) : - 5 a + 6

- 5 a + 6 = 26

Move

6

to the right side

- 5 a = 20

Divide both sides by

- 5

a = - 4

21 n^{3} - 3 n^{2} - 35 n + 5

- 8 x + 3 = - 6 x + 11

2^{10}

- 2 y^{2} - 11 y - 15

x + 9 = - 1

What is the answer to 2a^2-[a+[2(a-1)(a+3)]]=26 ?
The answer to 2a^2-[a+[2(a-1)(a+3)]]=26 is a=-4
Solve for a: 2a^2-[a+[2(a-1)(a+3)]]=26
The solution is a=-4