1. Which of the following is a standard form of a quadratic equation?
1. x-2x=-5
2. x^3+3x^2=2
3. x^2-4x+4=0
4。 2x+3=0
2 -
leader board
3 -
2. In the quadratic equation x^2+7x-2=0, what is the value of b?
1。 7
2。 -2
3。 2
4。 1
4 -
5 -
3. Which of the following expressions represents the quadratic term in the equation x^2+2x+1=0?
1。 4
2. x^2
3。 1
4. 2倍
6 -
7 -
4. What is the standard form of the quadratic equation if a=-2, b=3, and c=5?
1. -2x^2+3x+5=0
2. -2x^2+3x=-5
3. 3x^2-2x+5=0
4. 5x^2+3x-2=0
8 -
9 -
5. Which term in a quadratic equation represents the constant term?
1。 C
2. 上述所有的
3. bx
4. ax^2
10 -
11 -
6-10. Transform the given equation into the standard form of quadratic equation. Then, identify the quadratic term, the linear term, and the constant term. " 4x^2+5x+6=x^2-2x+4"
3x^2+7x-2=0, quadratic term=3x^2, linear term=7x, and constant term=-2