How do you solve a^ { 2} + 1= 17?
2 Answers
Apr 14, 2018
a =
Explanation:
1/
2/
3/ Take the square root both side
4/ a =
Apr 14, 2018
Explanation:
"rearrange and equate to zero"
"subtract 17 from both sides"
rArra^2-16=0
a^2-16" is a "color(blue)"difference of squares"
[a^2-b^2=(a-b)(a+b)]
rArr(a-4)(a+4)=0
"equate each factor to zero and solve for x"
a-4=0rArra=4
a+4=0rArra=-4