lescoto8925 lescoto8925

13-01-2022
Mathematics

contestada

y=9-x
y-2x^2+4x+6

solve the simultaneous equation

Respuesta :

Scabbers Scabbers

16-01-2022

Step-by-step explanation:

9-x-2x²+4x+6

=15+3x-2x²

=-2x²+3x+15

D=b²-4ac

=3²-4×-2×15

=9+120

=129

x1= (-b+VD)/2a

=(-3+V129)/-4

=(3+V129)/4

x2= (-b-VD)/2a

=(3-V129)/4

Answer Link

Otras preguntas

Given: x+y=10 If x= -21, what is y? Type a numerical answer in the space provided. Do not type spaces in your answer

Why was Mesopotamia referred to as the Fertile Crescent in the past? Why was the city of Kairawan important in the past?

What are properties of rocks

Find the measure of "theta". Round all answers to the nearest tenth.

Write x^2 + 4x +5 in the form of (x + a)^2 + b where a and b are integers

PLEASE HELP!!! Write the factored form of the least common denominator needed to simplify this expression

This diagram represents 3 batches of light yellow paint. Select a ratio that represents 1 batch of the same shade of light yellow paint. (look at screen shot fo

which of the following are run-ons? there can be more than one correct answer: 1. There's been a lot of research with dogs and how dogs interact with people. 2.

give reason for the following observation The smell of hot sizzling food reaches you several metres away but to get the smell from cold food you have to go clos

(2pts) Given 750ml of an 5M Na2CO3 stock solution, how much do you need to make 675ml of a 25% Na2CO3 working solution