yungriri12 yungriri12

24-09-2019
Mathematics

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Solve the equation x^2-5=11 using the indicated method

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ghanami ghanami

24-09-2019

Answer:

Step-by-step explanation:

x² - 5 = 11

add 5 : x² - 5+5 = 11 +5

x² = 16

x² - 4 ² = 0

(x-4)(x+4)=0

x - 4 = 0 or x+ 4 = 0

x = 4 or x = - 4

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