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The value of c for which the considered trinomial becomes perfect square trinomial is: 20 or -20
<h3>What are perfect squares trinomials?</h3>They are those expressions which are found by squaring binomial expressions.
Since the given trinomials are with degree 2, thus, if they are perfect square, the binomial which was used to make them must be linear.
Let the binomial term was ax + b(a linear expression is always writable in this form where a and b are constants and m is a variable), then we will obtain:
Comparing this expression with the expression we're provided with:
we see that:
Thus, the value of c for which the considered trinomial becomes perfect square trinomial is: 20 or -20
Learn more about perfect square trinomials here:
<h3>Morgan invested for 17 years</h3>
<em><u>Solution:</u></em>
From given,
Principal = $ 50, 000
Total amount = $ 177, 500
Rate of interest = 15 %
Number of years = ?
Interest amount = Total amount - principal
Interest amount = 177, 500 - 50, 000
Interest amount = 127500
<em><u>Use the formula,</u></em>
Thus he invested for 17 years