Question

1) if a+b+c=15 and AB+BC=35. find a^2 + b^2 + c^2
2) polynomial kx^2 + 3x^2 -3 and 2x^3- 5x +k when divided by (x-4) leave the same remainder in each case.find the value of K.
3) find the value of p if 5^p-3 * 3^2p-8 =225

Please answer all the three questions..I will mark you as a brainlist and give you 15 points

Answer 1

$<b ><I >hey mate here is your answer$

$\color{Red} {\boxed{\bold{\underline{ Question no. = 1 }}}}$

Given = a+b+c = 15
AB + BC + AC = 35

To find = a² + b² + c² = ?

$\color{brown} {\bold{\underline{answer}}}$ =

(a+b+c)² = a² + b² + c² + 2ab + 2ac +2bc
= (15)² = a²+b²+c² +2(AB+BC+AC)
= 225 = a²+b²+c² + 2×35
=a²+b²+c² = 225-70
= a²+b²+c² = 155 answer

hope this helps you

Answer 2

❤❤I hope it helps ✌✌


Given :-

= a+b+c = 15
=AB + BC + AC = 35

To find = a² + b² + c² = ?

$\huge {\red {\bold {Answer}}}$


(a+b+c)² = a² + b² + c² + 2ab + 2ac +2bc
= (15)² = a²+b²+c² +2(AB+BC+AC)
= 225 = a²+b²+c² + 2×35
=a²+b²+c² = 225-70
= a²+b²+c² = 155 answer