Question

(ii) (x + 5) (x + 6) (x + 7)q



SIMPLIFY​

Answer 1

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$Mᴜʟᴛɪᴘʟʏ \: (1) \: ᴀɴᴅ \: (2),$

$(x + 5)(x + 6)$

$\: \: \: = {x}^{2} + 6x + 5x + 30$

$\: \: \: = {x}^{2} +11x + 30$

$Nᴏᴡ, \: Mᴜʟᴛɪᴘʟʏ \: ᴡɪᴛʜ \: 3;$

$\: \: \: = ( {x}^{2} + 11x + 30)(x + 7)$

$= {x}^{3} + 7 {x}^{2} + 11 {x}^{2} + 77x + 30x + 210$

$= {x}^{3} + 18 {x}^{2} + 107x + 210$

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$\large\sf\underline{\orange{Hope \:  It  \: Helps \:  You!}}$

Answer 2

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(ii) (x + 5) (x + 6) (x + 7)

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❥(x + 5) (x + 6) (x + 7)

$= {(x+5)(x+6)}(x+7)$

$= (x² + 6x + 5x + 30) (x+7)$

$= ( x² + 11x + 30 ) (x+7)$

$= x³ + 7x² + 11x² + 77x + 30x + 210$

$= x³ + 18x²+107x+ 210$

$\red{\bold{\underline{\underline{****************************************************}}}}$