Advertisements
Advertisements
प्रश्न
The perimeter of a rectangle is 28x3+ 16x2 + 8x + 4. One of its sides is 8x2 + 4x. Find the other side
Advertisements
उत्तर
Perimeter of a rectangle (2l + 2b)
= 28x3 + 16x2 + 8x + 4
Let one side (l) = 8x2 + 4x
∴ 2l = 2 (8x2 + 4x) = 16x2 + 8x
∴ 2b = (28x3 + 16x2 + 8x + 4) - (16x2 + 8x)
= 28x3 + 16x2 + 8x + 4 - 16x2 - 8x
= 28x3 + 4
∴ Other side (b) = `(28"x"^3 + 4)/2 = 14"x"^3 + 2`
APPEARS IN
संबंधित प्रश्न
If m = 9x2 - 4xy + 5y2 and n = - 3x2 + 2xy - y2 find: m - 3n
Simplify: 4x + 7y - (5y - 8) - 2x
Multiply: - 3m2n + 5mn - 4mn2 and 6m2n
Copy and complete the following multi-plication:
a + b
× a + b
Copy and complete the following multi-plication:
ax - b
× 2ax + 2b2
Multiply: 2mnpq, 4mnpq and 5 mnpq
Simplify: `"x"/2+"x"/4`
Simplify: `"x"/2 -"x"/8`
Simplify: `"6k"/7 - ("8k"/9 - "k"/3)`
Simplify: `("5k"/8 - "3k"/5) div "k"/4`
