Question

If you answer it correctly I will mark you brainliest

Answer 1

Step-by-step explanation:

Your answer is 4

Using formulae D=b^2-4ac

Answer 2

Answer: discrimante is zero

A=a^2+b^2 B=2ac+2bd+c^2+d^2

D=B^2 -4AC

0=B^2-4AC

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0= 2abcd -a^2d-b^2c^2