# Solve the equations and inequalities below, if possible. Check your solutions. a.(4x−2)^{2}≤100b.(x−1)^{2}=9c. x^{2}+x−20<0d.2x^{2}−6x=−5

Solve the equations and inequalities below, if possible. Check your solutions. $$\displaystyle{a}.{\left({4}{x}−{2}\right)}^{{{2}}}≤{100}$$
$$\displaystyle{b}.{\left({x}−{1}\right)}^{{{2}}}={9}$$
$$\displaystyle{c}.{x}^{{{2}}}+{x}−{20}{<}{0}$$
$$\displaystyle{d}{.2}{x}^{{{2}}}−{6}{x}=−{5}$$

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$$\displaystyle{a}.-{2}\leq{\left\lbrace{x}\right\rbrace}\leq{\left\lbrace{3}\right\rbrace}$$
$$\displaystyle{b}.{x}={4}{\quad\text{and}\quad}{x}=-{2}$$
$$\displaystyle{c}.-{5}{<}{x}{<}{4}$$
$$\displaystyle{d}.{x}={1.5}\pm{0},{5}{i}$$
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