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Solve the following quadratic equation x^(2)+7x+12

(x+a)(x+b) = 0The two numbers must have a product of 12 and a sum of 7.3*4 = 12 AND 3+4=7Therefore(x+3)(x+4) = 0Therefore x+3 = 0 --> x = -3OR x+4 = 0 --> x = -4
MV
Answered by Michael V. • Maths tutor
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How do I rewrite algebraic fractions as a single fraction?

The first step to writing an expression with more than one fraction as a single fraction is to find their lowest common denominator. For example, in a question with two fractions where the denominators are x...
DO
Answered by David O. • Maths tutor
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Draw and annotate four labelled diagrams illustrating the injection molding process.

The polymer material is loaded into a hopper (in pellet form).2. The pellets go through an Archimedes screw surrounded by a heating element which melts the polymer.3. A ram forces the polymer into the die.4....
MV
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In the production of anhydrous copper sulphate (a reversible reaction), the forward reaction is an endothermic reaction. Explain the effect of increasing the temperature on the production of anhydrous copper sulphate.

By increasing the temperature, the reactant particles gain more energy. This has a two-fold effect. Firstly, the reactant particles gain more kinetic energy, therefore they start to travel faster, resulting ...
JN
Answered by Jaime N. • Chemistry tutor
3214 Views

Why does increasing temperature increase the rate of reaction?

Increasing temperature increases the rate of reaction for 2 reasons: the first (minor) reason is that particles have more kinetic energy with increasing temperature, so there are more collisions between reac...
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Answered by Sneha P. • Chemistry tutor
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