drewwilson07
drewwilson07
04-04-2016
Mathematics
contestada
Factorise and Solve
Respuesta :
Panoyin
Panoyin
04-04-2016
x² + 8x - 20 = 0
x² + 10x - 2x - 20 = 0
x(x) + x(10) - 2(x) - 2(10) = 0
x(x + 10) - 2(x + 10) = 0
(x - 2)(x + 10) = 0
x - 2 = 0 or x + 10 = 0
+ 2 + 2 - 10 - 10
x = 2 or x = -10
The answer is B.
Answer Link
VER TODAS LAS RESPUESTAS ( 13+ )
Otras preguntas
if you are given the coordinates 128 E longitude, 45 N latitude what is this an example of ______
Which quantity of heat is equal to 200. joules? (1) 20.0 kJ (3) 0.200 kJ (2) 2.00 kJ (4) 0.0200 kJ
Which compound is an unsaturated hydrocarbon? (1) hexanal (3) hexanoic acid (2) hexane (4) hexyne
Given the balanced equation representing a reaction: CaO(s) + CO2(g) ==>CaCO3(s) + heat What is the total mass of CaO(s) that reacts completely with 88 grams
How are HNO3(aq) and CH3COOH(aq) similar? (1) They are Arrhenius acids and they turn blue litmus red. (2) They are Arrhenius acids and they turn red litmus blue
Which is bigger 20% of 300 or 1/4 of 200
A compound has a molar mass of 90. grams per mole and the empirical formula CH2O. What is the molecular formula of this compound? (1) CH2O (3) C3H6O3 (2) C2H4O2
Find the product and simplify the answer to an equivalent decimal. 9.235*100
Why do you think the Court ruled that African Americans had no access to federal court?
The compounds 2-butanol and 2-butene both contain (1) double bonds, only (3) carbon atoms (2) single bonds, only (4) oxygen atoms
