Provide the proper response.True or false? 
+ 
= 
Fill in the blank(s) with the appropriate word(s).
False
Mathematics
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Rewrite the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the trigonometric expression without the use of a calculator.cos2 112.5° - sin2 112.5°
A. 
B. - 
C. 
D. - 
Mathematics
Solve the equation by factoring.x2 - x = 56
A. {7, 8} B. {1, 56} C. {-7, -8} D. {-7, 8}
Mathematics
Provide an appropriate response.What is a good first step when you are solving 4x2 + 5 = 19x by factoring?
A. Subtract 4x2 from each side. B. Divide by 19x on each side. C. Subtract 5 from each side. D. Subtract 19x from each side.
Mathematics
Simplify each side of the equation and then solve. Check your solution.-5x - 4x = -81
A. 81 B. - 81 C. 9 D. -9
Mathematics