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Recognise that quadratic can be factorised: (x+4)(x-1)=0 This gives the solutions x=-4 and x=1 by inspection.

Moi, je fais de nombreux choses pour aider l’environnement. Premièrement, dans ma maison on recycle tout ; le papier, le verre, même les vêtements. Deuxiement, j’essaie toujours de me souvenir d’éteindre les...

First Simplify the numbers we know. Therefore we get: x 2 =75/3 which is the same as x 2 =25 Now find the square root of 25, which is 5 or -5. Therefore x=5 or -5

To expand the brackets in a quadtratic equation you should multiply whatever is outside the bracket by that which is inside the bracket. For example: 2(x+3) First multiply the first part of the bracket with ...

Firstly, identify the recurring portion of the decimal. In this case, it is "13" set up an equation "x=0.2131313 You need to place the repeating section to the left of the decimal point. To do...