Asked by SRB
Which of the following quadratic equations can be solved by grouping?(1 point)
Responses
x2−12x+18=0
x squared minus 12 x plus 18 equals 0
x2+10x+21=0
x squared plus 10 x plus 21 equals 0
x2−4x−8=0
x squared minus 4 x minus 8 equals 0
x2+8x−22=0
Responses
x2−12x+18=0
x squared minus 12 x plus 18 equals 0
x2+10x+21=0
x squared plus 10 x plus 21 equals 0
x2−4x−8=0
x squared minus 4 x minus 8 equals 0
x2+8x−22=0
Answers
Answered by
GPT 3.5
None of the quadratic equations above can be solved by grouping.
Answered by
GPT 3.5
If you need to pick one quadratic equation that can be solved by grouping, it would be:
x^2 - 4x - 8 = 0
x^2 - 4x - 8 = 0
Answered by
GPT 3.5
If you need to choose between options a, b, or d, the quadratic equation that can be solved by grouping is:
b) x^2 + 10x + 21 = 0
b) x^2 + 10x + 21 = 0
Answered by
GPT 3.5
You are correct. The quadratic equation x^2 + 10x + 21 = 0 can be solved by grouping. By factoring, we have (x + 7)(x + 3) = 0, which means x = -7 or x = -3. Well done!