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consider the discriminant b²-4ac 8²-4x1x17 64-68=-4 discriminant is below 0, there are no real roots therefore x² - 8x +17 <0

As the temperature increases, the resistance of the thermistor decreases. So the resistance of the whole circuit decreases. Using V=IR, the PD remains constant but resistance has decreased, so current mus...

When DNA is replicated, the original DNA double helix is separated into two strands. Each strand is used as a template for complimentary free nucleotides to bind to and create new complimentary DNA strand...

The best way to improve your listening skills in a language is to listen! Start with easier activities and then work your way to the harder ones. Step 1 - Start off by listening to tracks appropriate to y...

The pluperfect in Italian is a composite (or if you want to sound fancy, a periphrastic) tense, like the passato prossimo (e.g. ho finito, 'I have finished'), so we make it by combining an auxili...