Answer:Although the Quadratic Formula always works as a strategy to solve quadratic equations, for many problems it is not the most efficient method. Sometimes it is faster to factor or complete the square or even just "out-think" the problem. For each equation below, choose the method you think is most efficient to solve the equation and explain your reason. Note that you do not actually need to solve the equation. a. x2+7x−8=0x
2
+7x−8=0, b. (x+2)2=49(x+2)
2
=49, c. 5x2−x−7=05x
2
−x−7=0, d. x2+4x=−1x
2
+4x=−1.
Answer:
Step-by-step explanation:
Answer:
-30
Step-by-step explanation:
substitute the values and get -30
Answer:
Answer is C
Step-by-step explanation:
Answer:
12x^4-35x^3+45x^2-13x-15
Step-by-step explanation:
some issues with the signa