[PDF] [PDF] Exercise 71: 9th Class Science Punjab Board - MathCityorg

1 Solve each equation and check for extraneous solution , if any i) √ + = ( 



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[PDF] Exercise 71: 9th Class Science Punjab Board - MathCityorg

1 Solve each equation and check for extraneous solution , if any i) √ + = ( 

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1

Solve the following equations.

i) ૛ (Solution): Multiply both sides by 6 ͵T FstT Hx Lx HT Esx Hx ii) ࢞ି૜ (Solution): Multiply both sides by 6 FxT Ft t L Fs Hx (Solution): ଵ E t u L w x E s FxT x F s FxT x L w x F t u 2

ͳʹFstHsFxT

xLstHw xF t uHst ͵L xTFv uFxT

͵LuHxTFv

uFuHxT

ͳͷLFsu

3 ͸L {FT ͸L {FT vi) ࢞ (Solution):௫

TFtLtH:TFt;

͵EtTLtTFv

͵LFv

vii) ૛࢞ 4

ʹݔͷE

w t:TEw;L t u

ʹݔͷEt:tTEw;Hw

t :TEw;Lt:tTEw;Ht u viii) ૛࢞

ݔͳL

wFt x

ݔͳL

u x

ݔͳL

s t 5 ix) ૛ s TEsL s TEs :TEs;:TFs;Fs TEsH :TEs;:TFs; L s

TEs:TEs;:TFs;

x) ૛ s t :TEt;L s x 6 :TEt;Hs t :TEt;L s xH :TEt; ͵E s tL TEt x ͸L TEt x

1. Solve each equation and check for extraneous solution , if any.

i) ξ૜࢞૝L

Check:

ii) ξ૛࢞૝૜ 7

Check:

iii) ξ࢞૜F quotesdbs_dbs7.pdfusesText_13