4) Se a = 7, b = - 3 e c = 2, a equação do 2º grau que corresponde a esses coeficientes é: 2x (x+1) + 5x² - 5x = - 2 2x² + 7x - 5 = 0 3x² - 7 = 0 4 (x² + 7) - 3x - 7 = 0 Nenhuma das alternativas acima.

What is the solution set of the inequality - 7 < x 2 < 4? - 5 < x < 6 - 9 < x < 2 - 5 < x < 2 - 9 < x < 6

Simplify completely 12 times x to the third power minus 4 times x to the 2nd power plus 8 times x all over negative 2 times x. -6x2 + 2x + 4 -6x2 + 2x - 4 6x4 - 2x3 + 4x2 6x2 - 4x2 + 8x

Is y = |x|-1 a linear equation

frank and his mom got some fruit at the fruit stand yesterday. they bought 2 and 1 half pounds of peaches, 7 eighths of a pound of raspberries, and 1 and 1 fourth pounds of apricots. How many pounds of fruit did they buy in all?

what is the domain of f (x) = cos (x) ? A. the set of real numbers - 2pi ≤ x ≤ 2pi B. the set of real numbers - 1≤x≤1 C. the set of real numbers 0≤x≤2pi D. the set of all real numbers

Two sides of a right triangle have lengths of 78 inches and 30 inches the third side is not the hypothesis how long is the third side

There are 4 Board of Directors positions open. 2 will be for men, 2 will be for women. Out of 20 candidates, 11 are men, 9 are women. How many total outcomes are possible?

What is 7 / 28ths simplified?

Convert 35/20 into a decimal

Which expression is equivalent to 2 (2x+1) + 3x+3