The steps to solve the equation (x+ 5)²− 3x=x² − 3 are shown below.
Step1. ? − 10?+ 25 − 3?= ?− 3 Step2 −13?+ 25 = −3
Step3 −13?= −28
Step4 28/13
Given that the solution is incorrect, in which step was the first mistake made and what is the correct solution to the equation?
(a) Step 1; –4
(b) Step 2; 4
(c) Step 3; − 22/13
(d) Step 4; − 28/13
Answers
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Answer:
que :(x+5)^2-3x=x^2-3
Step-by-step explanation:
x^2+25+10x-3x=x^2-3
7x=-28
x= -28/7
x=-4
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