Question 453363
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(sub subject is Factoring)

solve {{{49a^2-56a+16=0}}} 
please justify your answer thank you
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<pre>
49a^2 - 56a + 16 = 0.


Left side is   {{{(7a-4)^2}}}.


So, this equation   49a^2 - 56a + 16 = 0  has the root  a = {{{4/7}}}.     <U>ANSWER</U>
</pre>

Solved.