Solve 10.5cm^2quadtext{(ii)}21cm^2

$$10.5 cm ^ { 2 } \quad \text { (ii) } 21 cm ^ { 2 }$$

Evaluate

$$-\frac{441c^{2}m^{4}}{2}$$

Solution Steps

Multiply c and c to get c^{2}.

$$10.5c^{2}m^{2}i\times \left(21i\right)m^{2}$$

To multiply powers of the same base, add their exponents. Add 2 and 2 to get 4.

$$10.5c^{2}m^{4}i\times \left(21i\right)$$

Multiply 10.5 and i to get 10.5i.

$$10.5ic^{2}m^{4}\times \left(21i\right)$$

Multiply 10.5i and 21i to get -220.5.

$$-220.5c^{2}m^{4}$$