Multiplying Polynomials: Tutorial 3 Question
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Simplify the following expression.
(4x^2 + 8x + 15) + (x^2 - x - 27) - (x + 5)(x - 7)

Plzzz plzz maths ! quadratic sequences =an^2+bn 1) 1,6,15,28,45 2)5,18,39,68,105 3) 1,8,21,40,65 4) 7,24,51,88,135 5) -1,2,9,20,35

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Here is another math questions. i will keep asking different questions. 4^2x=6