Question

simplify - 3( 7x +4 )= 4(5x +6) , x=?
with steps​

Answer 1

Answer:

STEP1:Equation at the end of step 1

STEP 2 :

Equation at the end of step2:

STEP3:

3x4 - 5x3 + 7x - 4 Simplify —————————————————— x - 3

Checking for a perfect cube :

 3.1    3x4 - 5x3 + 7x - 4  is not a perfect cube

Trying to factor by pulling out :

 3.2      Factoring:  3x4 - 5x3 + 7x - 4 

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1:  7x - 4 

Group 2:  3x4 - 5x3 

Pull out from each group separately :

Group 1:   (7x - 4) • (1)

Group 2:   (3x - 5) • (x3)

Bad news !! Factoring by pulling out fails :

The groups have no common factor and can not be added up to form a multiplication.

Polynomial Roots Calculator :

 3.3    Find roots (zeroes) of :       F(x) = 3x4 - 5x3 + 7x - 4

Polynomial Roots Calculator is a set of methods aimed at finding values of  x  for which   F(x)=0  

Answer 2

Answer:

3(7x+4) = 4(5x+6)

=21x+12 = 20x+6

=21x-20x= 20x+6

= x = -6 ANSWERS