Quantitative - Mathematics - Arithmetic:

Arithmetic

MCQ - 21-1399

Question:

If f(x)=3x²−4x+2 and g(x)=2x²+x+3, what is f(x)+g(x)?

$6 x^{4} - 3 x^{3} + 2 x^{2} - 4 x + 6$
$5 x^{2} - 3 x + 5$
$2 x^{2} + 3 x - 5$
$5 x^{2} - 3 x + 5$
$6 x^{2} - 4 x + 6$

Correct Answer: B

Explanation:

When we add the functions together, we can only add terms that have matching exponents. First, let's add the terms that are squared:

$3 x^{2} + 2 x^{2} = 5 x^{2}$

Next, let's do the linear terms:

$- 4 x + x = - 3 x$

Finally, we add the constants:

2+3=5

Then we collect all the terms back together:

$f (x) + g (x) = 5 x^{2} - 3 x + 5$

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86 MCQ for effective preparation of the test of Arithmetic of Arithmetic section.

Read the MCQ statement: If f(x)=3x2−4x+2 and g(x)=2x2+x+3, what is f(x)+g(x)?, keenly and apply the method you have learn through the video lessons for Arithmetic to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 21-1399.

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Solve the question for MCQ No. and decide which option (A through D/E) is the best choice to answer the MCQ, then click/tap the blue button to view the correct answer and it explanation.

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