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Using the identity (x + a)(x + b) = x^2 + (a + b)x + ab, the product (x + 4)(x - 7) is
What is the coefficient of x^2 in the product (2x + 3)(x^2 - x + 4)?
Find the product (y + 6)(y - 2) using the identity (x + a)(x + b) = x^2 + (a + b)x + ab.
Using the identity (x + a)(x + b) = x^2 + (a + b)x + ab, find 63 \times 67.
Multiply (x^2 - 2x + 3) by (x + 4) and simplify.
Simplify (a + b)(2a - 3b + c) - (2a - 3b)c.
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