10bf + 25bg - 21p - 14pq

Quadratic factorisation

3. Two students factor 2x2 + 20x + 42and get two different answers: (2x + 6) (x + 7) and (x + 3) (2x + 14) Do both answers check? Why don't they agree? Is either answer completely correct? Explain.

What's the missing number : 9876, 6447, 2527, x.?

The length of an arc is a circle is 12cm. The corresponding sector area is 108cm square. Find the radius of the circle

Determine the intercepts of the line. y = - 3x + 12 y-intercept: ( -intercept:

In the equation y=4x-7, what is the value of y when x=2?

Which of the following four items is the least like the other three? A, H, I, E

3. Simplify 2a + 2 / a^2 - 1 A) 2 / a - 1 B) 2a + 2 / a^2 - 1 C) - 2 D) a + 1 / a - 1

How many roots does this equation have? x^2 = 64 and 0 < or = x < + infinity

Suppose we fit a regression line to predict the number of incidents of skin cancer per 1,000 people from the number of sunny days in a year. For a particular year, we predict the incidence of skin cancer to be 1.

How do you simplify negative 2M plus 9 m+8