Factorize: 49p2–1.
Complete the entries in the third column of the table.
S. No. |
Equation |
Value of variable |
Equation satisfied Yes/No |
(a) |
10y = 80 |
y = 10 |
- |
(b) |
10y = 80 |
y = 8 |
- |
(c) |
10y = 80 |
y = 5 |
- |
(d) |
4l = 20 |
l = 20 |
- |
(e) |
4l = 20 |
l = 80 |
- |
(f) |
4l = 20 |
l = 5 |
- |
(g) |
b + 5 = 9 |
b =5 |
- |
(h) |
b + 5 = 9 |
b = 9 |
- |
(i) |
b + 5 = 9 |
b = 4 |
- |
(j) |
h − 8 = 5 |
h = 13 |
- |
(k) |
h − 8 = 5 |
h = 8 |
- |
(l) |
h − 8 = 5 |
h = 0 |
- |
(m) |
p + 3 = 1 |
p = 3 |
- |
(n) |
p + 3 = 1 |
p = 1 |
- |
(o) |
p + 3 = 1 |
p = 0 |
- |
(p) |
p + 3 = 1 |
P = − 1 |
- |
(q) |
p + 3 = 1 |
P = − 2 |
- |
Check whether the value given in the brackets is a solution to the given equation or not:
(a) n + 5 = 19 (n = 1) (b) 7n + 5 = 19 (n = − 2)
(c) 7n + 5 = 19 (n = 2) (d) 4p − 3 = 13 (p = 1)
(e) 4p − 3 = 13 (p = − 4) (f) 4p − 3 = 13 (p = 0)