3x2 + 14x - 49 = 0
solving the equation by factoring

Step-by-step explanation:

3x²+14-49=0

3×-49=-147

21-7=14

21×-7=-147

3x²+21x-7x-49=0

3x(x+7)-7(x+7)=0

(x+7)(3x-7)=0

x=-7,7/3

answer is 144

step-by-step explanation:

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.