Good afternoon friends, since my companion blog posted quadratic equations there are some exercises to fix.
Exercises Equations of 2nd Grade
1) Identify the coefficients of each equation and tell whether it is complete or not:
a) 5x2 - x3 - 2 = 0
b) 3x2 + 55 = 0
c) x2 - 6x = 0
d) x2 - 10x + 25 = 0
2) Finding the roots of equations:
a) x2 - x - 20 = 0
b) x2 - 3x -4 = 0
c) x2 - 8x + 7 = 0
3) among the numbers -2, 0, 1, 4, which ones are roots of the equation x2-2x-8 = 0?
. 4) The number -3 is a root of the equation x2 - 7x - 2c = 0 these conditions, determine the coefficient c:
5) If you multiply a real number x by itself and subtract 14 from the result, you will get five times the number x. What is this number?
Nenhum comentário:
Postar um comentário