Math, asked by DJALOK718, 3 months ago

(I) Multiply (6x2 – 5x + 3) by (3x2

+ 7x – 3)

(II) Simplify :- x2

(x – 3y2

) – xy(y2 – 2xy) – x(y3 – 5x2)​

Answers

Answered by shreekrishna35pdv8u8
0

Answer:

1.) \:  \:  \:  \:  \: (6 {x}^{2}  - x + 3)(3 {x}^{2}  + 7x - 3) \\  = 6 {x}^{2} (3 {x}^{2}  + 7x - 3) - x(3 {x}^{2}  + 7x - 3) + 3(3 {x}^{2}  + 7x - 3) \\  = 18 {x}^{4}  + 42 {x}^{3}  - 18 {x}^{2}  - 3 {x}^{3}  - 7 {x}^{2}  + 3x + 9 {x}^{2}  + 21x - 9 \\  = 18x ^{4}  - 39 {x}^{3}  - 16 {x}^{2}  + 24x - 9

2.) \:  \:  \:  \:  \: x ^{2} </p><p></p><p>(x – 3y ^{2} </p><p></p><p>) – xy(y ^{2}  – 2xy) – x(y ^{3}  – 5x ^{2} ) \\  =  {x}^{3  }  - 3 {x}^{2}  {y}^{2}  -  x{y}^{3}  + 2 {x}^{2}  {y}^{2}  - x {y}^{3}  + 5 {x}^{3}  \\  = 6 {x}^{3}  -  {x}^{2}  {y}^{2}  - 2x {y}^{3}

Similar questions