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dedylja [7]
2 years ago
8

The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b

Mathematics
2 answers:
Andrews [41]2 years ago
8 0
X^2 - x - 90 =0
This equation is in standard form ax^2+ bx + c
The sum of the solutions is -b/a (a and b are the coefficients from the equation above, not the solutions to the equation)
The answer is 1/1 = 1
REY [17]2 years ago
3 0

Answer:

Step-by-step explanation:

Alright, let get started.

The given equation is : x^2-1x-90=0

This is a quadratic equation.

The standard form of a quadratic equation is : AX^2+BX+C=0

Comparing the given equation with standard one, the values of A ,B and C are :

A is 1

B is -1

C is -90

Since a and b are the roots of the equation, so the formula for sum of roots a+b will be = \frac{-B}{A}

a+b=-\frac{-1}{1} =1

hence a+b will be 1   :   Answer

Hope it will help :)

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