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Chapter 9: Q. 9.32 (page 880)

Solve by completing the square :

q2=7q-3

Short Answer

Expert verified

The required value ofxis7+372,7-372

Step by step solution

01

Given information

q2=7q-3

02

Calculation

q2=7q-3鈬�q2-7q=-3鈬�q2-7q+(12脳(-7))2=-3 鈬�q2-7q+(72)2=-3鈬�q2-7q+494=-3+494鈬�(q-72)2=374 鈬�q-72=卤374鈬�q=72卤372=7+372,7-372

The required value of xis7+372,7-372

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