2000004603 Level: AChoose the correct statement about the following equation. 2x−5=2The equation has just one positive root.The equation has just one negative root.The equation has two roots.The equation has no solution in R.
2000004604 Level: AChoose the correct statement about the following equation. 4+2x+4=xThe root of the equation is x=12.The equation has no root in R.The roots of the equation are x1=0 and x2=12.The roots of the equation are x1=4 and x2=−2.
2000004606 Level: AChoose the correct statement about the following equation. 5+2x−2=9The solution of this equation is a number from the interval (5;6].The solution of this equation is a number from the interval (−1;0].The solution of this equation is a number from the interval (0;3].The solution of this equation is a number from the interval (3;5].
2000004607 Level: AChoose the correct statement about the following equation. x−2x−6=6The roots of the equation are x1=10 and x2=6.The only root of the equation is x=6.The equation has no root in R.The roots of the equation are x1=−2 and x2=6.
2000004608 Level: AChoose the correct statement about the following equation. x+5+2−x=0The equation has no solution in R.The equation has just one root and the root is an odd number.The equation has just one root and the root is an even number.The equation has just two roots.
2000004609 Level: AChoose the correct statement about the following equation. 7−x−3=2The equation has just one root and the root is an even number.The equation has no solution in R.The equation has just one root and the root is an odd number.The equation has just two roots.
2000004610 Level: AChoose the correct statement about the following equation. (x+5)2=x+5The solution of the equation are all x∈[−5;∞).The solution of the equation are all x∈R.The equation has no solution in R.The equation has just one root x=0.
2010007703 Level: AFind the domain of the expression. 12x2−11x+14(−∞;2)∪(72;∞)(2;72)(−∞;2]∪[72;∞)[2;72]