Whenever a quadratic equation is in the form
(i.e. the leading terms is 1), you can solve it by looking for two numbers that give when summed and when multiplied.
So, in your case,
So, we're looking for two numbers such that:
you can clearly check that these numbers are 3 and 4.
Answer:
у = x² + 7x - 30
Step-by-step explanation:
x₁ = 3 and x₂ = -10
Use the formula (x - x₁)(x - x₂) = 0
(x - 3)(x - (-10)) = 0
(x - 3)(x + 10) = 0
x² + 10x - 3x - 30 = 0
x² + 7x - 30 = 0
Answer:
A =a l × w and then you solve the equation you get the answer
The answerthe complement of the question is perhaps the functionf(x)= x4 - 5x2to find the value of x-intercepts, just egalize f(x)= x4 - 5x2 to 0, and solve the equation.that is x4 - 5x2 = 0 equivalent to x²(x²-5) = 0, this implies x²-5 = 0 and x²=0,it implies x=0 and x²= 5, which means x = +/- sqrt(5)so the x intercepts are x=0, x = - sqrt(5) and x = +sqrt(5)
finally the answer is 3 x intercepts
a) 5, 10, -10, -6 (5 and 10 earned from work, 10 and 6 spent on expenses)
b) I'm sorry I can't plot on the computer
c) 3/2, 2/3, 0.5, 5/4; week one and four has the greatest amount eaten because 3/2 and 5/4 are the two largest numbers.