Question

please fast guys please​

Answer 1

Answer:

1. 20= 2×2×5

so plus ka sign ha tu sabsa big value hi answer ho gye

5 us the answer of this question

2. 2x²-kx-4=0

D=b²-4ac

k²-4×2×-4

k²+32 =0

k²=-32

k= +√32 ; -√32

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