Find the product $(x^{2} + 3) (x^{2} + 4)$

x^{4} + 7 x^{2} + 12

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x^{4} + x^{2} - 12

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x^{4} + x^{2} + 12

No worries! We‘ve got your back. Try BYJU‘S free classes today!

x^{4} + 7 x^{2} - 12

No worries! We‘ve got your back. Try BYJU‘S free classes today!

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Solution

The correct option is B $x^{4} + 7 x^{2} + 12$
$(x^{2} + 3) (x^{2} + 4)$ ,

Using the formula $(x + a) (x + b) = x^{2} + x (a + b) + a b$

$= (x^{2})^{2} + x^{2} (3 + 4) + 3 \times 4$

$= x^{4} + 7 x^{2} + 12$

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