Special Binomial

When you multiply (x-10)(10+x), how many terms will the answer have?

• one term

• two terms

• three terms

(a+b)(a+b)

• a²+b²

• a²+4ab+b²

• a²+2ab+b²

• 2a²+4ab+2b²

(8 - x)²

• x² - 16x + 64

• x² + 7x + 64

• x² + 14x + 64

• x² - 64

(3m + 1)(3m – 1)

• 9m² – 1

• 9m² – 6m – 1

• 9m² + 1

• 9m² + 6m – 1

(u-5v)(u+5v)

• u²-25v²

• u²+25v²

• u²-10uv+25v²

• u²+10uv+25v²

(u-5v)(u-5v)

• u²-25v²

• u²+25v²

• u²-10uv+25v²

• u²+10uv+25v²

A rectangle whose length is (9x + 10) cm and width is (9x - 10) cm would have what area?

• (81x² + 100) cm

• (81x² - 100) cm

• (81x² - 100) cm²

• (81x² + 100) cm²

Multiply:

(2x + 1)²

• 4x² + 1

• 4x² + 2x + 1

• 4x² + 4x + 1

• 2x² + 4x + 1

Multiply:

(a + b)²

• a² + 2ab + b²

• a² + 2ab + 2b

• a² + 4a + b²

• a² + 2a + b²

Multiply:

(x - 3)²

• x² + 9

• x² - 6x - 9

• x² - 6x + 9

• x² - 3x - 9