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Solve (x+10)(x-16)=0

x+10=0x= -10x-16=0x= 16
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Answered by Sophie T. • Maths tutor
3569 Views

(x+3)(x-4)(x+5) is identical to x^3 +ax^2 -17x+b. Find the value of a and the value of b.

Multiplying out the first two brackets gives (x^2-x-12)(x+5). Multiplying the remaining brackets gives x^3 + 4x^2 -17x - 60. a = 4b = 60
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Answered by Aeron E. • Maths tutor
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Solve the simultaneous equations : x ^2+2y=9, y=x+3 to find solutions for x and y.

We must use the substitution method for this question because the first equation is a quadratic. Take the more simple equation (the second one), and use that to substitute the value for y in to the first equ...
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Answered by Callum R. • Maths tutor
3872 Views

How to I approach an unseen text/poem

To any student who is required to analyse an unseen text in an exam setting, I would advise them to a set of techniques to notice when annotating the poem which would allow them to uncover literary technique...
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Answered by Dulcie G. • English tutor
3381 Views

What is the Bohr effect and how does it affect oxygen unloading?

The Bohr effect describes the change in affinity for oxygen haemoglobin has as a result of an increased partial pressure of CO2. It occurs due to the reaction between CO2 and H20, catalysed by carbonic anhyd...
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Answered by Tom M. • Biology tutor
16186 Views