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Solve x² + x -12

So to begin we need factors of 12. 12 and 1, 3 and 4. Then we need to think of a way of adding or subtracting to give -1. So we can have 4 and -3. which gives (x+4)(x-3). So x= -4 or x=3
PB
Answered by Param B. Maths tutor
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What effect does ADH release have on the blood osmolarity?

ADH (anti diuretic hormone) is a hormone that is released when the hypothalamus detects high blood osmolarity or when blood pressure is low. It is released from the posterior pituitary gland into the blood. ...
AY
9149 Views

What is an autoimmune disease?

The immune system usually makes antibodies to destroy foreign pathogens that may harm the body. However, in autoimmune disease, the body produces antibodies that recognise the body's own cells or enzymes as ...
AY
10861 Views

Why were some books included in the Bible and not others?

The process of deciding what was 'Scripture' took a long time. 'Scripture' is the Jewish and Christian name for writings that are considered to be holy and spoken by God. In the centuries before Christ, reli...
MW
2189 Views

How to solve the simultaneous equations of 3x + 2y = 9 and x-y = 3

First off we can refer to the equations as equation 1 and equation 2. In order to solve the equations we must find a way to combine them that elimates one of the variables ( X or y) so that the other can be ...
AR
Answered by Alice R. Maths tutor
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