Evaluate each expression if a= -2,b=5,c=4,and d=6. question 4b+5d-c/a=? and next one is b^2-2bc+c^2=?
955082
I think you just take the numbers and plug them in where the letters are and find your result.  Ie.  every time you see an a in the question, write -2 instead and then work it out...
855630
You need a common denominator .  You could reduce the third expression before going on; it is 2/3x\n\nThe CD for 3x and 6x is 6x\n\nMultiply top & bottom of first expression and new third expression by 2; leave the secons as it already has the C.D.  You get\n\n8/6x - 5/6x + 4/6x\n\nNow just add the tops: 8-5+4=7 so it is 7/6x
932663
Let a = A cos C\nb= A sin C\n\nsquare and add a^2+b^2 = A^2\n\nthen given expression\n= A cos C sin Bx + A sin C cos Bx = A sin(Bx+C)
165476
How about (a+c)/(b+d)  ? more interesting!!\n\nbtw this only work when a/b != c/d
272561
1 b = 5\n2 c = 7\n3 c = -8\n4 b = 9
774101
6+4x=3x+2\n4x-3x=2-6\n1x=-4\nx= -4
840880
assuming your expression equals 0\nx^2-25-0\n(x+5)(x-5)=0\nx=5 or -5
875476
(a + b - c)(a + b + c)\n((a+b)+c)((a+b)-c)\n(a+b)^2-c^2\na^2+2ab+b^2-c^2
1018019
6+(5-(4+(3-2)))=\n=6+(5-(4+1))=\n=6+(5-5)=\n=6+0=\n=6
808787
2(x+4)-6=-6(x+4)-10\nadding 6\n2(x+4)=-6(x+4)-4\ndividing by 2\n(x+4)=-3(x+4)-2\nx+4=-3x-12-2\nx+4=-3x-14\nadding -4\nx=-3x-18\nadding 3x\n4x=-18\ndividing by 4\nx=-9/2
448387
4b(5 - a) - 3c(5 - a)\n= (5 - a)(4b - 3c)\n\nThe answer is D. Since both have the factor (5 - a), you factor it out, and what's left is (4b - 3c).
1031270
x^2 + 5 + 5x + x y +5y\n\nx^2 + xy + 5x + 5y + 5\n\nx(x+y) + 5(x+y) + 5\n\nx(x+y) + 5(x+y+1)       OR     (x+5)(x+y)+5\n\nCynthia
770383
-4(3a+4b)= -12\n3(4a-5b)= -16\n\n-12a-16b= 48\n12a-15b= -48\n\n-b=0\nb=0\n\n3a+4(0)= -12\n3a= -12\na= -4\n\ncheck: 3(-4)+4(0)= -12
902233
4-5-(-6)\n=4-5+6 = 10-5 = 5
941498
1)2(x+5)=-3x\n2)-5 and 11
439090
((x^2-2x)/4y)/((x^2-4)/6)\n=(6x(x-2))/(4y*(x-2)(x+2))\n=3x/(2y(x+2))
828508
5.d=-4.5\n-7,-11.5,-16\n\n6.d=3\n-5,-2,1\n\n7.C=13.50h\n13.50*6=$81.00\n200/13.50=14.82 hrs