Math, asked by goswamisoham2208, 1 year ago

f (x)=x^2-4x+k is 20 find k

kartikeyshu10: you know what is the answer of this quistion

Answers

Answered by salmander

0

20 is a zero of the equation
therefore , 20^2-4*20+k=0
ans is -320

Answered by kartikeyshu10

1

(20)^2-4×20+k=0
400-80+k=0
320+k=0
k= -320 ANSWER

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