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Expand the following expression using suitable identities: (7x + 3)(7x + 3)

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Final answer:

To expand the expression (7x + 3)(7x + 3), we can use the distributive property and FOIL method. The expanded form is 49x^2 + 42x + 9.

Step-by-step explanation:

To expand the expression (7x + 3)(7x + 3) using suitable identities, we can make use of the distributive property and FOIL method. The expression can be expanded as:

(7x + 3)(7x + 3) = 7x * 7x + 7x * 3 + 3 * 7x + 3 * 3

This simplifies to:

49x^2 + 21x + 21x + 9

Combining like terms, we get the final expanded form:

49x^2 + 42x + 9

Learn more about Expanding Expressions

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