plz answer my question fast without any wrong answer with all the steps
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Step-by-step explanation:
hope it may help you
from wikipedia
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Step-by-step explanation:
HEY MATE ..
28.
Questions ) 2x 2 +kx+ 2 =0
⇒2(1) 2 +k(1)+ √2=0
⇒2+k+√ 2 =0
⇒k=−2−√ 2.
YOUR 27 NO. IS IN PIC SEE
29.
( a + b + c ) ^2 = a ^2 +b^2+c^2 + 2 ( ab + bc + ac )
( ab + bc + ac ) = - 20 /2 =10.
HOPE IT HELPS YOU
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