Yukkiidn
Answered

IDNStudy.com, ang iyong mapagkakatiwalaang mapagkukunan para sa maaasahang mga sagot. Magtanong at makatanggap ng eksaktong sagot mula sa aming mga bihasang miyembro ng komunidad.

How to solve Quadratic Equations by Factoring?
w/ examples, please. :)


Sagot :


example: (x^2+ 6x+9)

to factor the quadratic equation, you have to identify 2 factors of the first term. The first term is 2^x, its factors are( x and x). then, identify also the factors of the last term. so the factor of 9 is (3 and 3). if all the signs in the equation are positive , then the signs are also positive.

so the answer is (x+3)(x+3)


example
r²-100=0
=r²-100+100=0+100
=√r²=√100
=r=+or-10