化简 (sqrt(a)+5)^2

解答

化简

(a + 5)^{2}

a + 10 a + 25

求解步骤

(a + 5)^{2}

使用完全平方公式:

(a + b)^{2} = a^{2} + 2 ab + b^{2}

(a + 5)^{2} = (a)^{2} + 2 a \cdot 5 + 5^{2}

= (a)^{2} + 2 a \cdot 5 + 5^{2}

(a)^{2} = a

2 a \cdot 5 = 10 a

5^{2} = 25

= a + 10 a + 25

s im pl i f y (sec (x) + tan (x) - 1) (sec (- tan (x) + 1))

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

e x p an d 4 sin ((6 + 2 x)^{4})

s im pl i f y (a + 1) (3 a + b)

s im pl i f y \frac{2}{3} (10 - 1.5) + (1 - \frac{2}{3}) (5 - 0)