Question

x square - 7 x minus 30​

Answer 1

HEre Is Your Ans ⤵

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➡X² - 7X - 30 = 0

➡X² - 10X + 3X - 30 = 0

➡X ( X - 10 ) + 3 ( X - 10 ) = 0

➡( X + 3 ) ( X - 10 ) = 0

➡X = - 3 Or X = 10

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Answer 2

Question:-

${x}^{2} - 7x - 30$

Solution:-

${x}^{2} - 7x - 30$

$= {x}^{2} - (10 - 7)x - 30$

$= {x}^{2} - 10x + 3x - 30$

$= x(x - 10) + 3(x - 10)$

$= (x + 3)(x - 10)$

Now, Either (x + 3) = 0

or, (x - 10) = 0

(x + 3) = 0

=> x = - 3

(x - 10) = 0

=> x = 10

Therefore, x = - 3 or 10.