Question

Multiply:-

a. X2 -4x +7 by x-2

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Answer 1

$\green{\mid\green{\underline\green{\overline\frak{\red{ \large{SoluTion:-}}}}}} \green\mid$

x² -4x +7 by x-2

$\implies x \times(x²-4x+7 ) -2(x²-4x+7 )$

$\red{\implies \: {x}^{3} - 4 {x}^{2} + 7x - 2 {x}^{2} + 8x + 14}$

$\color{lime}{\implies \: {x}^{3} - 4 {x}^{2} - 2 {x}^{2} + 8x + 7x+ 14}$

$\pink{\implies \: {x}^{3} - 6{x}^{2} + 15x+ 14}$

Answer 2

Question :

Multiply :- x² - 4x + 7 by x - 2

Solution :

( x² - 4x + 7 ) ( x - 2 )

• x ( x² - 4x + 7 ) - 2 ( x² - 4x + 7 )
• x³ - 4x² + 7x - 2x² + 8x - 14
• x³ - 6x² + 15x - 14

Answer :

x³ - 6x² + 15x - 14

Hope it helps you :)