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5. Find the solutions of the equation (x - 3)2 - 81 = 0 by extracting the square root.​

Sagot :

SOLVE THE EQUATION:

[tex] 1.\sf \: (x - 3) \: 2 - 81 = 0 \\ \sf 2.\: 2x - 6 -81 = 0 \\ \sf \: 3. \: 2x - 87 = 0 \\ \sf \: 4. \: 2x = 87[/tex]

1. DISTRIBUTE

2. CALCULATE

3. MOVE CONSTANT THE RIGHT HAND SIDE AND THEN CHANGE THE SIGNS.

ANSWER:

x = 87/2

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