factorise the following trinomial a^2 +2a+49
Answers
Answered by
1
Question is not correct
zahraezzy:
ok then which is correct
Answered by
2
Hii ......
Factories of a^2 + 2a + 49
Here it can solve by Formula method which is - b +- under root ( b^2 - 4ac ) / 2a
so we have equation a^2 + 2a + 49 ....
Compare the whole by ax^2 + bc + c =0 ..
So we have a=1 , b= 2 and c= 49
Now use the formula method......
We get, -2+- under root( 2^2 - 4(1)(49) / 2(1)...
=> -2 +- under root( 4 - 196) / 2
=> -2 +- under root ( -192) / 2
=> -2 +- 8√3 / 2
=> 2 ( - 1+- 4√3 )/ 2
=> - 1+-4√3
Taking plus,,, then it will be -1 + 4√3
Taking Minus, then it will be -1-4√3......
________________
Factories of a^2 + 2a + 49
Here it can solve by Formula method which is - b +- under root ( b^2 - 4ac ) / 2a
so we have equation a^2 + 2a + 49 ....
Compare the whole by ax^2 + bc + c =0 ..
So we have a=1 , b= 2 and c= 49
Now use the formula method......
We get, -2+- under root( 2^2 - 4(1)(49) / 2(1)...
=> -2 +- under root( 4 - 196) / 2
=> -2 +- under root ( -192) / 2
=> -2 +- 8√3 / 2
=> 2 ( - 1+- 4√3 )/ 2
=> - 1+-4√3
Taking plus,,, then it will be -1 + 4√3
Taking Minus, then it will be -1-4√3......
________________
Similar questions