Algebra test

Algebra test Have out a piece of paper for all of these problems -CORRECT ANSWER- what is the degree of -5a^2b^3c^7 -CORRECT ANSWER- 12 degree write a trinomial with a degree of 8 and a constant term of 3 -CORRECT ANSWER- 12a^2b+13c^2b^6+3 simplify in standard form: (4x^3-5x^2+2x)- (x^3+6x^2-8) -CORRECT ANSWER- simplify: (x+5)(x^2-4x+2) -CORRECT ANSWER- factor: x^5+5x^2 -CORRECT ANSWER- factor: 4x^2+11x+6 -CORRECT ANSWER- factor by grouping, it won't tell you to group on the test so you have to assume it is grouping when there are 4 terms and not all terms have something in common like a similar variable or no GCF -CORRECT ANSWER- 6xy-8x+15y-20 -CORRECT ANSWER- (3y-4)(2x+5) factor quadratics formula is, ax^2+bx+c and don't forget to multiply a and c for the first step!! and a can't equal zero -CORRECT ANSWER- 3x^2-x-10 -CORRECT ANSWER- (x-2)(3x+5) factoring a monomial, this is the kind where you just have to expand everything and might not be on the test -CORRECT ANSWER- 24x^3y^4z^2 -CORRECT ANSWER- 2^3 times 3 times x times x times x times y times y times y times y times z times z GCF of monomials, 14a^3b^2, 18ab^4, easy -CORRECT ANSWER- 2ab^2 factor completely, undistribute -CORRECT ANSWER- 14a^3b^2+18ab^4 -CORRECT ANSWER- 2ab^2(7a^2+9b^2) steps to factoring -CORRECT ANSWER- 1. GCF? 2. grouping? 4 terms? 3. Quadratic? 3 terms that don't all have a GCF? -CORRECT ANSWER- TEST QUESTION NEXT!!!!!!!!! -CORRECT ANSWER- the area of a rectangle is 2x^2+15x+18. find the expression for the length and the width FACTOR!! -CORRECT ANSWER- (x+6)(2x+3) and it doesn't matter which one is the length and the width perfect squares, these are stupid but there is an easier way to do it with perfect squares -CORRECT ANSWER- ex: 4x^2-9= (2x+3)(2x-3) ex: x^2-100= (x+10)(x-10) here are some homework questions: -CORRECT ANSWER- factor completely: -CORRECT ANSWER- 8r^3-64r^2+r-8 -CORRECT ANSWER- (r-8)(8r^2+1) these are the ones that you should be able to do fast but they're dumb so just do them the long way if necessary, below -CORRECT ANSWER- x^2-x-20 -CORRECT ANSWER- (x+5)(x-4) multiple choice questions that i got right from that sheet below -CORRECT ANSWER- x^2-5x+4 -CORRECT ANSWER- (x-4)(x-1) some very recent homework and can be used as a study guide for the test so look at it later below -CORRECT ANSWER- what are the factors for the polynomial x^2+5x? -CORRECT ANSWER- x(x+5) what are the factors for the polynomial 12a^3b^2-18a^2b^4+6ab -CORRECT ANSWER- -6ab(-2a^2b+3ab^3-1) what are the factors for the trinomial x^2+8x-9 -CORRECT ANSWER- (x+9)(x-1) TEST WORTHY QUESTION BELOW FROM THE RECENT WORKSHEET -CORRECT ANSWER- the area of a rectangle can be written as the polynomial 6x^2+7x-20. if the length of the rectangle is 2x+5, what is the other dimension? -CORRECT ANSWER- 3x-4