Question

(−2a)(−3b 3 )(5a 2 b)−[(5a 3 )(2b 3 )−(3a 2 b)(2ab 2 )]​

Answer 1

Step-by-step explanation:

$45x = - 10 - 5 \\ 45x = 15 \\ x = \frac{15}{45} \\ x = \frac{3}{9} \\ x = \frac{1}{3}$

Answer 2

Step-by-step explanation:

STEP1:Equation at the end of step 1

((((5•(a2))•(b3))-(2a•(b2)))+((3•(b3))•(a2)))-5ab2

STEP 2 :

Equation at the end of step2:

((((5•(a2))•(b3))-(2a•(b2)))+(3b3•a2))-5ab2

STEP 3 :

Equation at the end of step3:

((((5•(a2))•(b3))-2ab2)+3a2b3)-5ab2

STEP 4 :

Equation at the end of step4:

(((5a2 • b3) - 2ab2) + 3a2b3) - 5ab2

STEP5:

STEP6:Pulling out like terms

 6.1     Pull out like factors :

   8a2b3 - 7ab2  =   ab2 • (8ab - 7) 

Final result :

ab2 • (8ab - 7)