Question

a-b=6 a²-b²=84 .Determine el valor de a+b+ab
AYUDAAA ES PARA AHORA

Answer 1

Explicación paso a paso:

$a = 6 + b \\ (6 + b) {}^{2} - b {}^{2} = 84$

${6}^{2} + {b}^{2} + 2 \times 6 \times b - {b}^{2} = 84$

$36 + {b}^{2} + 12b - {b}^{2} = 84 \\ 12b = 48 \\ b = 4$

$a = 6 + 4 \\ a = 10$