plz help me in this solution
with the formula plz
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This symbol(/) is pronounced as by
Step-by-step explanation:
= -19p²+3q²-5r²,2q²-5p²+17r²,-1/7p² +3/5q²-r²
= -19p²+3q²-5r²+2q²-5p²+17r²+-1/7p²+3/5q²-r²
= -19p²-5p²+-1/7p²+3q²+2q²+3/5q²-5r²+17r²-r²
= -24p²+-1/7p²+5q²+3/5q²+12r²-r²
= -24p²+_1/7p²+5q²+3/5q²+11r²
= -24*7+(-1)/7p²+5*5+3/5q²+11r²
= -168-1/7 p²+25+3/5q²+11r²
= -169/7p²+28/7q²+11r²
Therefore :- Ans = -169/7p²+28/7q²+11r²
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