Question

SANSKAR ENGLISH PRIMARY S
First Semester Exam
Date:24/11/2020
Standard -
Time: 2 Hours
Subject: - Math's
Que. 1.A) Express the following numbers in Index form
1) Fourth root of 12
2) Cube root of 27
3) Seventh root of 182
4) Eighth root of 225
Jue. 1.B) Fill in the blanks:
1) The point of concurrence of altitudes of a triangle
2) The point of concurrence of medians of a triangle​

Answer 1

Answer:

thank you very very very..... much

Answer 2

Answer:

1.256

Step-by-step explanation:

For 1, the 4 fourth roots are the solutions to x 4-1=0. Factoring yields x 4-1=(x 2-1)(x 2+1)=(x-1)(x+1)(x-i)(x+i) and we get the 4 4th roots of 1 being 1, -1, i, -i. Think of complex numbers as a vector or two dimensional number.