4x3-16x2-18x
Final result :
2x • (2x2 - 8x - 9)
Reformatting the input :
Changes made to your input should not affect the solution:
(1): "x2" was replaced by "x^2". 1 more similar replacement(s).
Step by step solution :
Step 1 :
Raise x to the 2nd power
Exponentiation :
Equation at the end of step 1 :
((4 • (x3)) - (16 • x2)) - 18x
Step 2 :
Raise x to the 3rd power
Exponentiation :
Equation at the end of step 2 :
((4 • x3) - 24x2) - 18x
Step 3 :
Simplify 4x3-16x2 - 18x
Step 4 :
Pulling out like terms :
3.1 Pull out like factors :
4x3 - 16x2 - 18x = 2x • (2x2 - 8x - 9)
Trying to factor by splitting the middle term
3.2 Factoring 2x2 - 8x - 9
The first term is, 2x2 its coefficient is 2 .
The middle term is, -8x its coefficient is -8 .
The last term, "the constant", is -9
Step-1 : Multiply the coefficient of the first term by the constant 2 • -9 = -18
Step-2 : Find two factors of -18 whose sum equals the coefficient of the middle term, which is -8 .
-18 + 1 = -17
-9 + 2 = -7
-6 + 3 = -3
-3 + 6 = 3
-2 + 9 = 7
-1 + 18 = 17
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored
Final result :
2x • (2x2 - 8x - 9)