Respuesta :

Step-by-step explanation:

Solve for b^2.

[tex] \frac{1}{2} ( {b {}^{1} + {b}^{2} ) }{h} = a[/tex]

[tex](b {}^{1} + {b}^{2} )h = 2a[/tex]

[tex]b {}^{1} + {b}^{2} = \frac{2a}{h} [/tex]

[tex] {b}^{2} = \frac{2a}{h} - {b}^{1} [/tex]