Given that a\displaystyle {a}a is constant such that f(x)=ax4−2x3+7x2−9x+4\displaystyle {f{{\left({x}\right)}}}={a}{x}^{{4}}-{2}{x}^{{3}}+{7}{x}^{{2}}-{9}{x}+{4}f(x)=ax4−2x3+7x2−9x+4 and that f(−2)=−4\displaystyle {f{{\left(-{2}\right)}}}=-{4}f(−2)=−4 then find a\displaystyle {a}a.
a=\displaystyle {a}=a= Preview Question 6
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