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