Question

factorise these and ill make u the brainliest ​

Answer 1

Answer:

1)

$5ab+6ca+7da\\a(5b+6c+7d)$

2)

$12ab+18cd+9c\\12ab+9c(2d+1)$

3)

$12a^2+36ab+27b^2\\3\left(4a^2+12ab+9b^2\right)\\3\left(2a+3b\right)\left(2a+3b\right)\\3\left(2a+3b\right)^2$

4)

$9a^2+12a+4\\\left(3a\right)^2+2\cdot \:3a\cdot \:2+2^2\\\left(3a+2\right)^2$

5) Is this one written correctly?

$25b^2+4ab+16\\b(25b+4a)+16$

6)

$49z^2+70xz+25x^2\\(7z+5x)^2$

7)

$12a^2-27b^2\\3\left(4a^2-9b^2\right)\\3\left(2a+3b\right)\left(2a-3b\right)$

8)

$49c^2-36d^2\\\left(7c\right)^2-\left(6d\right)^2\\\left(7c+6d\right)\left(7c-6d\right)$

9)

$a^2c^2-b^2d^2\\\left(ac\right)^2-\left(bd\right)^2\\\left(ac+bd\right)\left(ac-bd\right)$

10)

$4z^2+44z+121\\\left(2z+11\right)^2$

11)

$9x^2+6x+1\\(3x+1)^2$

12)

$50a^2-72c^2\\25\cdot \:2a^2+36\cdot \:2c^2\\2\left(25a^2-36c^2\right)\\2\left(5a+6c\right)\left(5a-6c\right)$

Answer 2

MAKE ME BRAINLIEST

$Answer:1)5ab+6ca+7da\\a(5b+6c+7d)2)12ab+18cd+9c\\12ab+9c(2d+1)3)12a^2+36ab+27b^2\\3\left(4a^2+12ab+9b^2\right)\\3\left(2a+3b\right)\left(2a+3b\right)\\3\left(2a+3b\right)^24)9a^2+12a+4\\\left(3a\right)^2+2\cdot \:3a\cdot \:2+2^2\\\left(3a+2\right)^25) Is this one written correctly?25b^2+4ab+16\\b(25b+4a)+166)49z^2+70xz+25x^2\\(7z+5x)^27)12a^2-27b^2\\3\left(4a^2-9b^2\right)\\3\left(2a+3b\right)\left(2a-3b\right)8)49c^2-36d^2\\\left(7c\right)^2-\left(6d\right)^2\\\left(7c+6d\ri$