Question #43385

1 Answer
Mar 27, 2017

Answer:

#x=-3" or " x=1#

Explanation:

To solve a #color(blue)"quadratic equation"# express it in the form.

#• ax^2+bx+c=0#

#"Rearrange " 2x+x^2=3" into this form"#

#rArrx^2+2x-3=0#

To factorise consider the product of the factors of -3 which sum to 2.

These are 3 and - 1

#rArr(x+3)(x-1)=0#

#x+3=0rArrx=-3" or"#

#x-1=0rArrx=-1#