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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 bracket at a time: First di...
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Answered by Olivia H. • Maths tutor
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Describe the different forms of active transport across a biological membrane

Active transport is the movement of solutes, either ions or molecules, across a membrane up their concentration gradient (from low to high concentrations). The process requires a carrier protein which is emb...
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Answered by Olivia H. • Biology tutor
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'Eisenhower lived up to his 1952 promise to show no weakness in foreign policy'. Explain why you agree or disagree with this view.

A strong foreign policy entailed continued commitment to successful containment, the avoidance of war and domination on an international stage; although this was realised in fact, by 1960 Eisenhower's foreig...
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Answered by Ewan C. • History tutor
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When is the French subjunctive used and how is it formed?

The subjunctive is a verb form which is used to express uncertainty, a feeling or a mood. It is used frequently in French: common expressions such as 'je veux que' (I want...), 'il faut que' (it's necessary ...
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Answered by Ella J. • French tutor
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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 represen...
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Answered by Eduardo E. • Maths tutor
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