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5x² + 2x + 1 = 0, x = -0.2 or -1

Blood vessels near the surface of the skin constrict to prevent heat loss to the environment and maintain blood flow around the central organs. This is called vasoconstriction. Also, skeletal muscles cont...

A mole is a unit of amount of substance. One mole is the number of atoms of carbon in 12g of the carbon-12 isotope(when 12 is the relative atomic mass) , which is 6.02 x 10²³ . This means that...

Step 1: Remove the most obvious factor, in this case 3x. y = 3x (x² - 4) Step 2: Realize (x² - 4) is the product of two squares and can undergo completing the square to produce ...

Mitochondria have a double membrane structure, with an inner layer with many folds to create a high surface area. This provides more space for more metabolising proteins and therefor they are able to crea...