If a(x + 1) + b(x − 1) − 2 = 0 for all real x, then a =

Mathematics

1 answer:

jek_recluse [69]3 years ago

7 0

Answer:

D) 1

Step-by-step explanation:

using the distributive property we have ax+a+bx-b-2=0. because the equation is true for all real x, ax=-bx. this means a-b-2=0 and a=-b. a-b-2=0 becomes a=b+2. then we substitute a for -b and get -b=b+2 which becomes 2b=-2 so b=-1. since a=-b, a=1

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