展开 (a^2+16)/((a+4)(a-4))

解答

展开

\frac{a ^{2} + 16}{( a + 4 ) ( a - 4 )}

\frac{a ^{2} + 16}{a ^{2} - 16}

求解步骤

\frac{a ^{2} + 16}{( a + 4 ) ( a - 4 )}

乘开

(a + 4) (a - 4) : a^{2} - 16

= \frac{a ^{2} + 16}{a ^{2} - 16}

e x p an d \frac{4 - x}{( x + 1 ) ( x ^{2} + 1 )}

e x p an d 2 (- 1 + 3) (1 + 2)

s im pl i f y - t^{2} (\frac{12 t}{625} - \frac{12}{125})

e x p an d - x (\frac{12 t ^{12} ln ( t ) - t ^{12}}{1152 x ^{9}} + C)

e x p an d (\frac{4}{5} x + \frac{3}{5} y)^{2}