Solve (7x-0,5u)^2

$$( 7 x - 0,5 u ) ^ { 2 }$$

Evaluate

$$\left(-\frac{u}{2}+7x\right)^{2}$$

Solution Steps

Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(7x-0,5u\right)^{2}.

$$49x^{2}-7xu+0,25u^{2}$$

Expand

$$-7ux+\frac{u^{2}}{4}+49x^{2}$$

Solution Steps

Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(7x-0,5u\right)^{2}.

$$49x^{2}-7xu+0,25u^{2}$$