A/ 9xy (x 2 y– 4xy + 7y) b/ 7xy(x 2 y + xy – xy 2 )
c/ 3x(2x – 5) + 5x(9x + 7)
d/ 6x(x 2 – 7x – 5) – 5x (x – 4)

Which expression is equivalent to 2x^2+7x+4?

Write the following as a base and exponent

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)