Quadratic equation
Determine the numbers b and c that the numbers x1 = -7 and x2 = 5 were roots of the quadratic equation:
−3x2+bx+c=0
−3x2+bx+c=0
Correct answer:
Tips for related online calculators
Are you looking for help with calculating roots of a quadratic equation?
Do you want to round the number?
Do you want to round the number?
You need to know the following knowledge to solve this word math problem:
Grade of the word problem:
Related math problems and questions:
- Polynomial roots
Find the other zeroes of the polynomial 2x4+3x³-3x²-6x-2, if two of them are root2 & -root2 - Root
The root of the equation (x-10)² +4 = x² +35x is (equal or greater or less than zero). ... - A rope
A 75m piece of rope needs to be cut in the ratio 1:4. What is the length of each piece? - Lara's sequence
Lara starts with a number less than 20. She divides it by 2 adds 6. She then divides this result by 3 her answer is 4.5 What number does she start with?
- Earnings 4
Joey earned $35, which is five times more than Leo earned. How much did Leo earn? - Twizzlers
A five pack of Twizzlers costs $3.75. What is the unit rate? - Mixed numbers equation
4 5/9 is the same as the sum of 2 1/3 and 5/6 times a number. What is the number? Enter your answer as a mixed number in simplest form in the box. - The average 12
The average of the first five numbers drawn was 2499. the first four numbers were 4165, 320, 7142, and 64. What was the fifth number? - Sales tax 2
Item cost $430 before tax. Sales tax is $17.20. Find the sales tax rate and percentage.
- A teacher 3
A teacher gives pens and pencils to elementary students at an equal rate in each classroom. Pencils; Pens 18 ; 72 29 ; A 35 ; 140 B ; 168 Determine the missing value for the letter B. - Robotics team
The 4 robotics team members held a car wash to raise money. To attract customers, each person held a sign by the road for an equal portion of the car wash, which lasted 3 hours in all. How long did each person hold the sign? - The bouquets
A wedding planner is making bouquets. She must have equal numbers of bouquets made of 7 and 10 balloons each. How many bouquets would she get from 85 balloons? - Chocolate bar sharing
If John has 3/5 of a chocolate bar and wants to share it equally among himself and two friends, how much of the chocolate bar will each person get? - Determine 216
Determine the quotient; (-20) divided by ( -4) =? A) +6 B) - 6 C) +5 D) -5
- A right 3
A right triangle has a perimeter of 300 cm . its hypotenuse is 130cm. What are the lengths of the other sides . - HCF - big numbers
Find the HCF of 72030 and 88200 - Divide with remainder
Mrs. Diaz has 4 brownies left. She wants to share the brownies equally among her 5 children. Which of the following shows the amount of brownies each child can receive?