Question

Please explain how to draw this curve step by step
y=(x+1)(x+3)

Answer 1

multiply both equations.first

Answer 2

1- multiplay them (x+1)(x+3)

Answer 3

it will become x^2+3x+x+3

Answer 4

ARE U GUYS GIGHTING

Answer 5

x^2+4x+3

Answer 6

2- make a table column x and column y pic x values and calculate y.

Answer 7

then you will have pairs of pints

Answer 8

it will be a parabola .as it is a quadratic equation.

Answer 9

now find the discriminant it will come positive

Answer 10

u know how to find discriminant .D

Answer 11

nope

Answer 12

please let me know

Answer 13

have u learnt quadratic equation

Answer 14

yup

Answer 15

if ax^2+bx+c is the quadratic equation then .D=b^2-4ac

Answer 16

ok let me do...then i will inform abt the result

Answer 17

okay.

Answer 18

by solving it with table values i can't obtain a parabola...plz can u solve it till there so that i cant learn how to draw the curve

Answer 19

find the roots of equation

Answer 20

roots of this equation are -1 and -3 so parabola will cut x axis at this point