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Solve x^2 = 4(x – 3)^2

x 2 = 4(x-3) 2 x 2 = 4(x-3)(x-3) - showing that these are double bracketsx 2 = 4(x 2 - 6x + 9) - expanding the double bracketsx 2 = 4x 2 - 24x + 36 - multiplying the 4 by the expression inside to remove the ...
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Answered by Emily L. • Maths tutor
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Acabas de pasar tus vacaciones en España. Escríbele una carta a tu amiga española. Escribe aproximadamente 90 palabras en español.

Hola ! Acabo de pasar una semana en España para mis vacaciones. Fui con mis padres y mi hermano, lo pasé bomba! Fuimos a Madrid y visitamos muchos lugares de interés. Normalmente, no me gustan los museos per...
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Answered by Emily L. • Spanish tutor
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Expand the following equations

a. x(x+4)b. 3x(x+4)c. (x+8)(x+3)d. (x+7)^2
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Answered by Kane S. • Maths tutor
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There are 10 boys and 20 girls in a class. In a class test, the mean score of the boys is 77. The mean score of the girls is 80. What is the mean score of the whole class?

To calculate the mean of the whole class:1) Find the sum of the individual scores of the whole class. Boys: 10 x 77 = 770Girls: 20 x 80 = 1600Total of Boys and Girls: 770 + 1600 = 23702) Divide the sum of th...
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Answered by Anuj M. • Maths tutor
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How do I write an introduction for my essay?

A good introduction establishes your main line of argument and links it directly to the essay question. You also can outline one or two of your main points without going into too much detail, as this is what...
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