The middle term of the trinomial has been rewritten. Now factor by grouping.12x2 - 9xy - 20xy + 15y2
A. (12x - 5y)(x - 3y)
B. (3x + 5y)(4x - 3y)
C. (3x - 5)(4x - 3)
D. (3x - 5y)(4x - 3y)
Answer: D
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Decide whether the expression is or is not an identity.tan (A + 
) = -cot A
A. Identity B. Not an identity
Find the sum.3.7 + (-2.6)
A. -1.1 B. 6.3 C. -6.3 D. 1.1
Provide an appropriate response.A student is trying to solve the equation (x + 5)(x - 10) = 2. The student has set x + 5 = 2 and x - 10 = 2 and found that two solutions x = -3, x = 12. The student checks his or her results by plugging in his or her solutions into the original equation and finds that they do not work. How would you advise him or her?
What will be an ideal response?
Write the equation in slope-intercept form, state the slope and y-intercept, and graph the equation.2x - 6y = -12
A. y = 
x + 2;
slope: 
, y-intercept (0, 2)
B. y = 
x - 2;
slope: 
, y-intercept (0, - 2)
C. y = - 
x - 2;
slope: - 
, y-intercept (0, - 2)
D. y = - 
x + 2;
slope: - 
, y-intercept (0, 2)