tolong jawab pertanyaan di atas

a. luas segitiga = a×t/2
[tex]3 {x}^{2} + 10x + 8 = a \times (2x + 4)[/tex]
[tex](3x + 4)(x + 2) = a \times (2x + 4)[/tex]
[tex] \frac{(3x + 4)(x + 2)}{(2x + 4)} = a[/tex]
[tex] \frac{(3x + 4)(x + 2)}{2(x + 2)} = a[/tex]
[tex]a = \frac{3x + 4}{2} [/tex]

b. a = 3x+4/2

[tex]a = \frac{3.10 + 4}{2} [/tex]
[tex]a = \frac{34}{2} = 17[/tex]