solve the following problem?
Answers
Answer:
Step-by-step explanation:
9p+8q
Answer:
STEP
1
:
Equation at the end of step 1
(27 • (p3)) + 26q3
STEP
2
:
Equation at the end of step
2
:
33p3 + 26q3
STEP
3
:
Trying to factor as a Sum of Cubes
3.1 Factoring: 27p3+64q3
Theory : A sum of two perfect cubes, a3 + b3 can be factored into :
(a+b) • (a2-ab+b2)
Proof : (a+b) • (a2-ab+b2) =
a3-a2b+ab2+ba2-b2a+b3 =
a3+(a2b-ba2)+(ab2-b2a)+b3=
a3+0+0+b3=
a3+b3
Check : 27 is the cube of 3
Check : 64 is the cube of 4
Check : p3 is the cube of p1
Check : q3 is the cube of q1
Factorization is :
(3p + 4q) • (9p2 - 12pq + 16q2)
Trying to factor a multi variable polynomial :
3.2 Factoring 9p2 - 12pq + 16q2
Try to factor this multi-variable trinomial using trial and error
Factorization fails
Final result :
(3p + 4q) • (9p2 - 12pq + 16q2)