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LOWER TIER a) Multiply the following out: (x+3)(x-4). b) Factorise the following equation into two bracket form: x^2+7x+12

a) Use FOIL to multiply out these bracketsF: x 2 O: -4xI: +3xL: -12 x 2 -4x+3x-12 = x 2 -x-12b) Find two common numbers that ADD UP to give +7, and MULTIPLY TOGETHER to give 12 MULTIPLY TO 12 1 and 122 and 6...
JV
Answered by Jonathan V. • Maths tutor
3128 Views

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
4375 Views

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...
NS
Answered by Natalie S. • Maths tutor
3758 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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Which of these sentences is correct? 1: El perro era negro y energético, 2: El perro fue negro y energético or 3: El perro era negra y energético.

The correct answer is number 1. Number 2 is incorrect because it uses the preterite tense, which denotes a punctual, completed action in the past rather than a continual state of being. Number 3 is incorrect...
EM
Answered by Emma M. • Spanish tutor
2188 Views