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Maths
GCSE

Find the value of X when 3x^2 + 6x + 3 = 0

Firstly we can see that this equation can be simplified. They are all divisible by 3 so this means we can simplify it to x^2 + 2x + 1 =0 Now we need to find what times together equals 1 but when added tog...

Answered by Alby J. Maths tutor
2406 Views

Solve: 2((x)^2) + 7x + 3, for x

First factorise the quadratic: (2x + 1)(x + 3). Next set the factorised equation to 0: (2x + 1)(x + 3) = 0. Then solve the equation to find the 2 values of x, dividing through one br...

Answered by Olivia H. Maths tutor
2339 Views

The perimeter of a right-angled triangle is 78 cm. The lengths of its sides are in the ratio 3: 4 : 6 Work out the area of the triangle.

P1- Find the value of a single unit in the ratio:78/(3+4+6) or (13)= 6
P1- Find the length of the base and the height of the triangle through multiplying the single unit scale by the number of units ...

Answered by Eduardo E. Maths tutor
2402 Views

Express 56 as the product of the its prime factors.

We will answer this question by drawing a prime factor tree.Start with 56 at the top of the page. Draw two branches coming off 56. 56 = 2 x 28, write 2 and 28 under the separate branches. Circle 2 as it i...

Answered by Daphne P. Maths tutor
6319 Views

How do you solve inequalities when they involve quadratics? i.e x^2+x-6<0

It is easiest to first solve the quadratic as if it isn't an inequality. This will then help us to sketch the graph of the function which will in turn help us to solve the inequality. So let's change the ...

Answered by Jake M. Maths tutor
3153 Views

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