Question

if (x+3)(x-4)=30,find x​

Answer 1

Answer:

4.24

Step-by-step explanation:

=> (x + 3) (X - 4) = 30

=> x² - 4x + 3x - 12 = 30

=> x² = 30 -12

=> x=√18

=> 4.24

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Answer 2

Answer:

x² -x -12 = 30

x²-x-42 = 0

x²-7x+6x -42 = 0

x(x-7)+6(x-7) = 0

(x-7)(x+6) = 0

x = 7 & -6 (Ans.)

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