S1
Hvordan faktoriserer du kvadratiske uttrykk?
{
"voice_prompt": "",
"manuscript": {
"title": {
"text": "How Do You Factorize Quadratic Expressions?",
"audio": "How do you factorize quadratic expressions?"
},
"description": {
"text": "Find the roots using the quadratic formula, factoring, or another method. Then write the expression as: a(x - x_1)(x - x_2).
",
"audio": "Find the roots using the quadratic formula, factoring, or another method. Then write the expression as: a times x minus the first root, times x minus the second root."
},
"scenes": [
{
"text": "To do this, you use the roots of the quadratic expression. Once you have them, you can rewrite the expression as a product of two brackets. The general rule is: the quadratic becomes a times x minus the first root, times x minus the second root. This is useful to know when analyzing algebraic expressions and graphing quadratic functions.",
"latex": "ax^2 + bx + c = a(x - x_1)(x - x_2)"
},
{
"text": "Let's factor two x squared minus four x minus six. Your goal is to rewrite it as a product of two brackets. To do that, first find the roots. These are the values of x that make the expression equal zero. You can use the quadratic formula, factoring, or another method.",
"latex": "2x^2 - 4x - 6"
},
{
"text": "Let's use the quadratic formula. a equals 2, b equals minus 4 and c equals minus 6. Substituting these values into the formula gives.",
"latex": "abc-formula....."
},
{
"text": " So, the solutions are x_1 equals 3 and x_2 equals minus 1.",
"latex": "x_1 = 3, \\quad x_2 = -1"
},
{
"text": "Now that you have the roots, plug them into the factoring formula. That gives you a times x minus the first root, times x minus the second root.",
"latex": "a(x - 3)(x + 1)"
},
{
"text": "In this example, a is two, so you get: two times x minus three, times x plus one.",
"latex": "2x^2 - 4x - 6 = 2(x - 3)(x + 1)"
}
],
"outro": {
"text": "Find the roots using the quadratic formula, factoring, or another method. Then write the expression as: a(x - x_1)(x - x_2).
",
"audio": "Find the roots using the quadratic formula, factoring, or another method. Then write the expression as: a times x minus the first root, times x minus the second root."
}
}
}
en_S1_factorize_quadric_expressions.jsonOpen with Text Editor Share
Displaying en_S1_factorize_quadric_expressions.json.