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We have two algebraic equations and we are trying to find what a and b can equal to fit for both situations. 1. 6a + b = 16 2. 5a - 2b = 19 The easiest method is substitution because we can sub in an equatio...

This is simplified by solving common terms (the x's and the y's). Where X and Y terms can't be solved together. Splitting it up: You can see 2x-x= x and for the Y terms (+)6y+2y=8y Therefore the final answer...

In Spanish, the perfect tense corresponds to the English construction to have done something e.g. I have eaten lunch . Like all compound tenses in Spanish, the verb used to form the have/has part is haber . ...

'Factorise' essentially means put into a simpler form, in this case with two sets of linear equations which would multiply out to give the quadratic equation shown above. What we are looking for to begin wit...

The question can be broken into two steps, 1) dy/dx is asking to differentiate y=x 3 +5x+3 with respect to x Differentiating we multiply by the current power and lower this powers value by 1. ( Constants dif...