Question

(x+4)^2 -(x-5)^2=9
Please solve this
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Answer 1

Answer:

x=16

Step-by-step explanation:

(x+4)^2-(x-5)^2= 9

now we will use identities......(a+b)^2=a^2+2ab+b^2,

so by splitting them in identities we get,

x^2+2(x)(4)+16-x^2-2(x)(5)+25=9

after solving the LHS side we get,

8x+16-10x+25=9

-2x+41=9

-2x=9-41

-2x=-32

x=-32/-2

both minus signs are removed,

x=16

hope you got some help,