simplify (4+7a^2)2

Solution

simplify

(4 + 7 a^{2}) 2

8 + 14 a^{2}

Solution steps

(4 + 7 a^{2}) \cdot 2

= 2 (4 + 7 a^{2})

Apply the distributive law:

a (b + c) = ab + a c

2 (4 + 7 a^{2}) = 2 \cdot 4 + 2 \cdot 7 a^{2}

= 2 \cdot 4 + 2 \cdot 7 a^{2}

Simplify

2 \cdot 4 + 2 \cdot 7 a^{2} : 8 + 14 a^{2}

= 8 + 14 a^{2}

6 \cdot 6 \cdot 6 \cdot 6 \cdot 6 \cdot 6

b (a + b) - a (a - b)

- 0.016 (x - 52.5)^{2} + 45

4 m^{x - 2} - 10 m^{x - 2} + 3 m^{x - 2}

a + 2 a + 9 a