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musickatia [10]
3 years ago
14

Complete the square to make a perfect square trinomial. Then, write the result as a binomial squared. q2+11q

Mathematics
2 answers:
Sedbober [7]3 years ago
8 0

Answer:

(q+\frac{11}{2})^2-\frac{121}{4}

Step-by-step explanation:

We have been given an expression q^2+11q. We are asked to complete the square to make a perfect square trinomial. Then, write the result as a binomial squared.

We know that a perfect square trinomial is in form a^2+2ab+b^2.

To convert our given expression into perfect square trinomial, we need to add and subtract (\frac{b}{2})^2 from our given expression.

We can see that value of b is 11, so we need to add and subtract (\frac{11}{2})^2 to our expression as:

q^2+11q+(\frac{11}{2})^2-(\frac{11}{2})^2

Upon comparing our expression with (a+b)^2=a^2+2ab+b^2, we can see that a=q, 2ab=11q and b=\frac{11}{2}.

Upon simplifying our expression, we will get:

(q+\frac{11}{2})^2-\frac{11^2}{2^2}

(q+\frac{11}{2})^2-\frac{121}{4}

Therefore, our perfect square would be (q+\frac{11}{2})^2-\frac{121}{4}.

hram777 [196]3 years ago
7 0

Answer:

(q+\frac{11}{2})^2-\frac{121}{4}

Step-by-step explanation:

The given expression is

q^2+11q

We need to write the result as a binomial square.

If an expression is x^2+bx, then we need to add (\frac{b}{2})^2 in the expression to make it perfect square.

In the given expression b=11 and x=q.

(\frac{b}{2})^2=(\frac{11}{2})^2

Add and subtract (\frac{11}{2})^2 in the given expression.

q^2+11q+(\frac{11}{2})^2-(\frac{11}{2})^2

(q+\frac{11}{2})^2-(\frac{11}{2})^2         [\because (a+b)^2=a^2+2ab+b^2]

(q+\frac{11}{2})^2-\frac{121}{4}

Therefore, the result as a binomial square is (q+\frac{11}{2})^2-\frac{121}{4}.

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