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HIGHER TIER a) Factorise the following equation into two bracket form: 2x^2-5x-12. b)2x^2-5x-12=0. Solve this equation to find the values of x, using your answer to part a). BONUS c) Sketch the function y=2x^2-5x-12, showing any x intercepts

a) Find two common numbers that ADD UP to give -5, and MULTIPLY TOGETHER to give (2*-12=) -24 MULTIPLY TO -24 -1 and 24 1 and -24 -2 and 12 2 and -12 3 and -8 -3 and 8 4 and -6 - 4 and 6 ADD TO -5 5 and -10 ...
JV
Answered by Jonathan V. • Maths tutor
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Solve the equation ((2x+3)/(x-4)) - ((2x-8)/(2x+1)) = 1. Give your answer to 2 decimal places.

Multiply both sides of the equation by the denominators to get:(2x+3)(2x+1) - (2x-8)(x-4) = (x-4)(2x+1)Expand all the brackets to get:(4x^2 + 6x + 2x + 3) - (2x^2-8x-8x+32) = 2x^2-8x+x-4Simplify both sides t...
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Answered by Natalie S. • Maths tutor
3683 Views

What are the four chambers of the heart and what is the order blood flows through them?

The four chambers of the heart are the right atrium, right ventricle, left atrium and left ventricle.Deoxygenated blood (blood with no oxygen) flows into the right side of the heart via the superior and infe...
KC
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How can I sound like a native speaker?

Good question! How can you tell when you're speaking to a non-native speaker of English? (Depending on the characteristics they mention, I lay out my answer.) Get to know the grammar of the language well. Th...
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Answered by Agnes T. • Italian tutor
2738 Views

Outline two types of determinism

Biological determinism refers to the concept that all human behaviour is innate and determined by factors like our genes, hormones and neurotransmitter systems. The biological approach looks at behaviour wit...
MM
Answered by Miriam M. • Psychology tutor
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