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Question 3
Factorise completely:
| (a) | \( 3x^2 + 6x\) | (b) | \( 5x^2 - 10x\) | (c) | \( 8x^2 + 4x\) |
| (d) | \( 9y^2 + 6y\) | (e) | \( 4b^2 - 12b\) | (f) | \( 8x^2 + 20x\) |
| (g) | \( 15x^2 - 5x\) | (h) | \( 24x^2 - 3x\) | (i) | \( bx^2 - bx\) |
| (j) | \( 5ax^2 + 10ax\) | (k) | \( 12xy^2 - 8xy\) | (l) | \( 35a^2b + 7ab^2\) |
Question 4
Factorise completely:
| (a) | \( 3a + 12b - 9c\) | (b) | \( 5x + 10y - 15z\) | (c) | \( 4a - 2b + 8\) |
| (d) | \( 6x^2 + 3xy - 21x\) | (e) | \( 8x^2 - 6xy + 10xz\) | (f) | \( 20xy - 15xy^2 + 35x^2y^2\) |
| (g) | \( 4xy^2 - 8y^2 + 20xy\) | (h) | \( 7x^2y + 4xy^2 - 3xy\) | (i) | \( 12a^2x - 30ax^2 + 6a^2x^2\) |
| (j) | \( 8ab^2 + 4a^2b^2 - 2ab\) | (k) | \( 18a^2b^2 - 6ab^2c - 21ab^2\) | (l) | \( 3xy^2 + 6axy^2 + 21ax^2y^2\) |